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The 5 biggest global business rivalries to watch, and how their outcomes will shape the future

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Power is precarious: The more of it you possess, the more competitors you attract, gunning for your customers, star employees, and market share. We drilled down on five of the biggest rivalries in business, across chips, AI, EVs, investing and finance, and energy. And though these incumbents and rising rivals are fierce, never count out the dark horses who are hungry for a spot at the top.

Check out the 2025 Fortune Most Powerful People list here.


AI chips

Jensen Huang
CEO, President, and Cofounder, Nvidia — U.S.

Nvidia CEO Jensen Huang might be forgiven for taking a moment to savor his company’s meteoric rise to the top of the stock market, driven by soaring demand for its high-performance chips that power generative AI. Now the most valuable company in the world, Nvidia controls over 90% of the market for the specialized chips used to train and run AI systems—cementing its dominance in the hardware race fueling the AI boom. Still, Huang is keeping an eye on the horizon. AMD is positioning itself as a viable alternative, while startups like Groq, Cerebras, and SambaNova are betting on custom chips designed to accelerate AI inference. None pose a serious threat to Nvidia’s dominance—yet.

Lisa Su
CEO and Chair, AMD — U.S.

AMD CEO Lisa Su never met her first cousin once removed, Jensen Huang, until both had risen to lead two of the most powerful chipmakers in the world. “There were no family dinners,” Su said in a recent interview. “It is an interesting coincidence.” But the two can’t avoid each other now. With corporate headquarters just miles apart in the same Silicon Valley town, AMD is pushing hard to establish itself as a viable second source for AI chips amid surging demand. The company has secured wins from major players like Microsoft and Meta—both eager to diversify their supply chains and reduce dependence on Nvidia’s tightly controlled hardware and software ecosystem. —Sharon Goldman


Musk: Win McNamee—Getty Images; Wang: VCG/Getty Images

Electric vehicles

Elon Musk
CEO, Cofounder, and other roles, Tesla, SpaceX, xAI, and others — U.S.

Elon Musk, the man who brought EVs to the masses, has seen Tesla’s fortunes erode as he gets entangled in social media and politics. Tesla’s annual deliveries in 2024 declined for the first time ever, and have continued to decline year over year each quarter since. Musk has bet the future on Tesla’s AI and camera-only self-driving system, with a soft robotaxi launch in June and the ongoing development of its humanoid robot. Critics argue the company’s self-driving tech is well behind that of competitors like Alphabet’s Waymo and BYD. While Tesla is still the most valuable auto company in the world, it’s not clear it will keep the top spot.

Wang Chuanfu
CEO, Chairman, and Founder, BYD — China

The late Charlie Munger, one of the most successful investors of all time, described Wang Chuanfu, founder and CEO of BYD, as a hardworking “genius.” In 2023, when BYD began dueling with Tesla for the top spot in EV sales, the U.S. auto industry started paying attention. BYD’s affordable models, ultrafast charging technology, and complimentary driver assistance systems have helped the company garner 20% of the global EV market. BYD is also the world’s second-largest EV battery manufacturer to date, with its innovative Blade Battery using iron and phosphate to help keep prices low. —Jessica Mathews


ALTMAN: JOEL SAGET—AFP/Getty Images; Zuckerberg: Chris Unger—Zuffa LLC

Artificial Intelligence

Sam Altman
CEO and Cofounder, OpenAI — U.S.

Altman’s leadership of OpenAI has made him one of Silicon Valley’s most powerful, and polarizing, figures. The AI company is rapidly ascending to tech’s top table, with more than 780 million weekly ChatGPT users, big corporate and government customers, and expansion plans in areas ranging from office productivity software to a new hardware device being built by former Apple designer Jony Ive. Valued at almost $300 billion in a venture capital round led by SoftBank in March, OpenAI is on track to generate more than $10 billion in revenue this year (while still losing billions of dollars annually).

Mark Zuckerberg
CEO, Chairman, and Founder, Meta — U.S.

Altman’s meteoric rise has made him plenty of enemies. He fell out with Elon Musk years ago and has clashed recently with Meta’s Mark Zuckerberg, who has been poaching OpenAI staff with multimillion-dollar comp packages. Google DeepMind competes with OpenAI to build the most capable AI models, and ChatGPT also poses an existential risk to Google’s dominance of internet search. Meanwhile, there’s no love lost between Altman and the Anthropic cofounders, who defected from OpenAI in 2021 in part because of concerns about Altman’s leadership and commitment to AI safety. —Jeremy Kahn


Dimon: Al Drago—Bloomberg/Getty Images; ROWAN: Yuki Iwamura—Bloomberg/Getty Images

Finance

Jamie Dimon
CEO and Chairman, JPMorgan Chase — U.S.

As he closes in on his 20th anniversary as CEO of the country’s biggest bank, Jamie Dimon is the undisputed dean of Wall Street and is poised to go down in history as one of the greatest bankers of all time. In times of crisis, the markets turn to Dimon as a source of clear and unvarnished authority. His stature grew in 2024 when he led JPMorgan Chase to record profits of $58.5 billion on $278.9 billion in revenue. Dimon has also responded to growing competition from the private equity world by having JPM establish private credit facilities of its own—and issuing a warning shot to Apollo and others to stop poaching junior bankers.

Marc Rowan
CEO, Chair, and Cofounder, Apollo Global Management — U.S.

Marc Rowan, a onetime corporate lawyer, has emerged in recent years as the dominant figure in the fast-growing world of private equity. In 2021, Rowan became CEO of Apollo, which he cofounded, and carved out a bold strategic shift revolving around private credit, a field that has doubled over the past five years to around $2 trillion. The pivot was highly lucrative, helping Apollo notch $1.49 billion in profits in Q4 of 2024. Rowan’s private credit charge poses a growing challenge to traditional banks like JPMorgan Chase, as Apollo and others become the go-to lending venues for large companies and institutions. —Jeff John Roberts


Woods: Andrey Rudakov—Bloomberg/Getty Images; Wirth: Hollie Adams—Bloomberg/Getty Images

Energy

Darren Woods
CEO and Chairman, Exxon Mobil — U.S.

Having missed out on the U.S. shale gas boom, Exxon Mobil was playing catch-up when Darren Woods took over as CEO in 2017. While it was the largest publicly traded company by market cap as recently as mid-2013, Exxon bottomed out amid the pandemic in 2020 when it was kicked out of the Dow, and archrival Chevron briefly surpassed it in value for the first time ever. But Woods’ focus on capital discipline, shareholder returns, and M&A has Exxon back on top of the industry, where it leads shale output in the booming Permian Basin. Its oil discoveries in offshore Guyana are the envy of the energy world.

Mike Wirth
CEO and Chairman, Chevron — U.S.

A Chevron lifer who joined as an engineer in 1982, Mike Wirth took over in 2018—one year after Woods at Exxon Mobil. After serving as the energy darling of investors for a few years, Chevron now faces a revitalized Exxon. They’re rivals in the Permian Basin. They just settled a long arbitration rivalry over a dispute in Guyana. They’re even rivals in the burgeoning U.S. lithium business. Both stayed focused on fossil fuels and related low-carbon ventures while Europeans BP and Shell struggled to grow green energy. Meanwhile, TotalEnergies is the only oil major doubling down on a renewable energy focus. —Jordan Blum

This article appears in the August/September 2025 issue of Fortune.



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Senate Dems’ plan to fix Obamacare premiums adds nearly $300 billion to deficit, CRFB says

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The Committee for a Responsible Federal Budget (CRFB) is a nonpartisan watchdog that regularly estimates how much the U.S. Congress is adding to the $38 trillion national debt.

With enhanced Affordable Care Act (ACA) subsidies due to expire within days, some Senate Democrats are scrambling to protect millions of Americans from getting the unpleasant holiday gift of spiking health insurance premiums. The CRFB says there’s just one problem with the plan: It’s not funded.

“With the national debt as large as the economy and interest payments costing $1 trillion annually, it is absurd to suggest adding hundreds of billions more to the debt,” CRFB President Maya MacGuineas wrote in a statement on Friday afternoon.

The proposal, backed by members of the Senate Democratic caucus, would fully extend the enhanced ACA subsidies for three years, from 2026 through 2028, with no additional income limits on who can qualify. Those subsidies, originally boosted during the pandemic and later renewed, were designed to lower premiums and prevent coverage losses for middle‑ and lower‑income households purchasing insurance on the ACA exchanges.

CRFB estimated that even this three‑year extension alone would add roughly $300 billion to federal deficits over the next decade, largely because the federal government would continue to shoulder a larger share of premium costs while enrollment and subsidy amounts remain elevated. If Congress ultimately moves to make the enhanced subsidies permanent—as many advocates have urged—the total cost could swell to nearly $550 billion in additional borrowing over the next decade.

Reversing recent guardrails

MacGuineas called the Senate bill “far worse than even a debt-financed extension” as it would roll back several “program integrity” measures that were enacted as part of a 2025 reconciliation law and were intended to tighten oversight of ACA subsidies. On top of that, it would be funded by borrowing even more. “This is a bad idea made worse,” MacGuineas added.

The watchdog group’s central critique is that the new Senate plan does not attempt to offset its costs through spending cuts or new revenue and, in their view, goes beyond a simple extension by expanding the underlying subsidy structure.

The legislation would permanently repeal restrictions that eliminated subsidies for certain groups enrolling during special enrollment periods and would scrap rules requiring full repayment of excess advance subsidies and stricter verification of eligibility and tax reconciliation. The bill would also nullify portions of a 2025 federal regulation that loosened limits on the actuarial value of exchange plans and altered how subsidies are calculated, effectively reshaping how generous plans can be and how federal support is determined. CRFB warned these reversals would increase costs further while weakening safeguards designed to reduce misuse and error in the subsidy system.

MacGuineas said that any subsidy extension should be paired with broader reforms to curb health spending and reduce overall borrowing. In her view, lawmakers are missing a chance to redesign ACA support in a way that lowers premiums while also improving the long‑term budget outlook.

The debate over ACA subsidies recently contributed to a government funding standoff, and CRFB argued that the new Senate bill reflects a political compromise that prioritizes short‑term relief over long‑term fiscal responsibility.

“After a pointless government shutdown over this issue, it is beyond disappointing that this is the preferred solution to such an important issue,” MacGuineas wrote.

The off-year elections cast the government shutdown and cost-of-living arguments in a different light. Democrats made stunning gains and almost flipped a deep-red district in Tennessee as politicians from the far left and center coalesced around “affordability.”

Senate Minority Leader Chuck Schumer is reportedly smelling blood in the water and doubling down on the theme heading into the pivotal midterm elections of 2026. President Donald Trump is scheduled to visit Pennsylvania soon to discuss pocketbook anxieties. But he is repeating predecessor Joe Biden’s habit of dismissing inflation, despite widespread evidence to the contrary.

“We fixed inflation, and we fixed almost everything,” Trump said in a Tuesday cabinet meeting, in which he also dismissed affordability as a “hoax” pushed by Democrats.​

Lawmakers on both sides of the aisle now face a politically fraught choice: allow premiums to jump sharply—including in swing states like Pennsylvania where ACA enrollees face double‑digit increases—or pass an expensive subsidy extension that would, as CRFB calculates, explode the deficit without addressing underlying health care costs.



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Netflix–Warner Bros. deal sets up $72 billion antitrust test

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Netflix Inc. has won the heated takeover battle for Warner Bros. Discovery Inc. Now it must convince global antitrust regulators that the deal won’t give it an illegal advantage in the streaming market. 

The $72 billion tie-up joins the world’s dominant paid streaming service with one of Hollywood’s most iconic movie studios. It would reshape the market for online video content by combining the No. 1 streaming player with the No. 4 service HBO Max and its blockbuster hits such as Game Of ThronesFriends, and the DC Universe comics characters franchise.  

That could raise red flags for global antitrust regulators over concerns that Netflix would have too much control over the streaming market. The company faces a lengthy Justice Department review and a possible US lawsuit seeking to block the deal if it doesn’t adopt some remedies to get it cleared, analysts said.

“Netflix will have an uphill climb unless it agrees to divest HBO Max as well as additional behavioral commitments — particularly on licensing content,” said Bloomberg Intelligence analyst Jennifer Rie. “The streaming overlap is significant,” she added, saying the argument that “the market should be viewed more broadly is a tough one to win.”

By choosing Netflix, Warner Bros. has jilted another bidder, Paramount Skydance Corp., a move that risks touching off a political battle in Washington. Paramount is backed by the world’s second-richest man, Larry Ellison, and his son, David Ellison, and the company has touted their longstanding close ties to President Donald Trump. Their acquisition of Paramount, which closed in August, has won public praise from Trump. 

Comcast Corp. also made a bid for Warner Bros., looking to merge it with its NBCUniversal division.

The Justice Department’s antitrust division, which would review the transaction in the US, could argue that the deal is illegal on its face because the combined market share would put Netflix well over a 30% threshold.

The White House, the Justice Department and Comcast didn’t immediately respond to requests for comment. 

US lawmakers from both parties, including Republican Representative Darrell Issa and Democratic Senator Elizabeth Warren have already faulted the transaction — which would create a global streaming giant with 450 million users — as harmful to consumers.

“This deal looks like an anti-monopoly nightmare,” Warren said after the Netflix announcement. Utah Senator Mike Lee, a Republican, said in a social media post earlier this week that a Warner Bros.-Netflix tie-up would raise more serious competition questions “than any transaction I’ve seen in about a decade.”

European Union regulators are also likely to subject the Netflix proposal to an intensive review amid pressure from legislators. In the UK, the deal has already drawn scrutiny before the announcement, with House of Lords member Baroness Luciana Berger pressing the government on how the transaction would impact competition and consumer prices.

The combined company could raise prices and broadly impact “culture, film, cinemas and theater releases,”said Andreas Schwab, a leading member of the European Parliament on competition issues, after the announcement.

Paramount has sought to frame the Netflix deal as a non-starter. “The simple truth is that a deal with Netflix as the buyer likely will never close, due to antitrust and regulatory challenges in the United States and in most jurisdictions abroad,” Paramount’s antitrust lawyers wrote to their counterparts at Warner Bros. on Dec. 1.

Appealing directly to Trump could help Netflix avoid intense antitrust scrutiny, New Street Research’s Blair Levin wrote in a note on Friday. Levin said it’s possible that Trump could come to see the benefit of switching from a pro-Paramount position to a pro-Netflix position. “And if he does so, we believe the DOJ will follow suit,” Levin wrote.

Netflix co-Chief Executive Officer Ted Sarandos had dinner with Trump at the president’s Mar-a-Lago resort in Florida last December, a move other CEOs made after the election in order to win over the administration. In a call with investors Friday morning, Sarandos said that he’s “highly confident in the regulatory process,” contending the deal favors consumers, workers and innovation. 

“Our plans here are to work really closely with all the appropriate governments and regulators, but really confident that we’re going to get all the necessary approvals that we need,” he said.

Netflix will likely argue to regulators that other video services such as Google’s YouTube and ByteDance Ltd.’s TikTok should be included in any analysis of the market, which would dramatically shrink the company’s perceived dominance.

The US Federal Communications Commission, which regulates the transfer of broadcast-TV licenses, isn’t expected to play a role in the deal, as neither hold such licenses. Warner Bros. plans to spin off its cable TV division, which includes channels such as CNN, TBS and TNT, before the sale.

Even if antitrust reviews just focus on streaming, Netflix believes it will ultimately prevail, pointing to Amazon.com Inc.’s Prime and Walt Disney Co. as other major competitors, according to people familiar with the company’s thinking. 

Netflix is expected to argue that more than 75% of HBO Max subscribers already subscribe to Netflix, making them complementary offerings rather than competitors, said the people, who asked not to be named discussing confidential deliberations. The company is expected to make the case that reducing its content costs through owning Warner Bros., eliminating redundant back-end technology and bundling Netflix with Max will yield lower prices.



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The rise of AI reasoning models comes with a big energy tradeoff

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Nearly all leading artificial intelligence developers are focused on building AI models that mimic the way humans reason, but new research shows these cutting-edge systems can be far more energy intensive, adding to concerns about AI’s strain on power grids.

AI reasoning models used 30 times more power on average to respond to 1,000 written prompts than alternatives without this reasoning capability or which had it disabled, according to a study released Thursday. The work was carried out by the AI Energy Score project, led by Hugging Face research scientist Sasha Luccioni and Salesforce Inc. head of AI sustainability Boris Gamazaychikov.

The researchers evaluated 40 open, freely available AI models, including software from OpenAI, Alphabet Inc.’s Google and Microsoft Corp. Some models were found to have a much wider disparity in energy consumption, including one from Chinese upstart DeepSeek. A slimmed-down version of DeepSeek’s R1 model used just 50 watt hours to respond to the prompts when reasoning was turned off, or about as much power as is needed to run a 50 watt lightbulb for an hour. With the reasoning feature enabled, the same model required 7,626 watt hours to complete the tasks.

The soaring energy needs of AI have increasingly come under scrutiny. As tech companies race to build more and bigger data centers to support AI, industry watchers have raised concerns about straining power grids and raising energy costs for consumers. A Bloomberg investigation in September found that wholesale electricity prices rose as much as 267% over the past five years in areas near data centers. There are also environmental drawbacks, as Microsoft, Google and Amazon.com Inc. have previously acknowledged the data center buildout could complicate their long-term climate objectives

More than a year ago, OpenAI released its first reasoning model, called o1. Where its prior software replied almost instantly to queries, o1 spent more time computing an answer before responding. Many other AI companies have since released similar systems, with the goal of solving more complex multistep problems for fields like science, math and coding.

Though reasoning systems have quickly become the industry norm for carrying out more complicated tasks, there has been little research into their energy demands. Much of the increase in power consumption is due to reasoning models generating much more text when responding, the researchers said. 

The new report aims to better understand how AI energy needs are evolving, Luccioni said. She also hopes it helps people better understand that there are different types of AI models suited to different actions. Not every query requires tapping the most computationally intensive AI reasoning systems.

“We should be smarter about the way that we use AI,” Luccioni said. “Choosing the right model for the right task is important.”

To test the difference in power use, the researchers ran all the models on the same computer hardware. They used the same prompts for each, ranging from simple questions — such as asking which team won the Super Bowl in a particular year — to more complex math problems. They also used a software tool called CodeCarbon to track how much energy was being consumed in real time.

The results varied considerably. The researchers found one of Microsoft’s Phi 4 reasoning models used 9,462 watt hours with reasoning turned on, compared with about 18 watt hours with it off. OpenAI’s largest gpt-oss model, meanwhile, had a less stark difference. It used 8,504 watt hours with reasoning on the most computationally intensive “high” setting and 5,313 watt hours with the setting turned down to “low.” 

OpenAI, Microsoft, Google and DeepSeek did not immediately respond to a request for comment.

Google released internal research in August that estimated the median text prompt for its Gemini AI service used 0.24 watt-hours of energy, roughly equal to watching TV for less than nine seconds. Google said that figure was “substantially lower than many public estimates.” 

Much of the discussion about AI power consumption has focused on large-scale facilities set up to train artificial intelligence systems. Increasingly, however, tech firms are shifting more resources to inference, or the process of running AI systems after they’ve been trained. The push toward reasoning models is a big piece of that as these systems are more reliant on inference.

Recently, some tech leaders have acknowledged that AI’s power draw needs to be reckoned with. Microsoft CEO Satya Nadella said the industry must earn the “social permission to consume energy” for AI data centers in a November interview. To do that, he argued tech must use AI to do good and foster broad economic growth.



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