John Ternus faces a complex transition as Apple's new CEO

John Ternus is set to take over as CEO of Apple, inheriting a company that has grown to a market cap of roughly $4 trillion under outgoing CEO Tim Cook. Cook, whose own net worth is estimated at roughly $3 billion, oversaw a market cap expansion of more than 11x during his tenure. Ternus must now steer the company through a shifting regulatory and competitive landscape as he manages the transition of Apple’s leadership team.

Ternus faces a significant legal minefield, particularly regarding antitrust—the legal regulation regarding market competition. This pressure builds on Apple’s historical regulatory friction, such as its 2016 standoff with the FBI over unlocking an iPhone in San Bernardino, California. In the US, the U.S. Department of Justice sued Apple in March 2024, which accused it of unlawfully dominating the smartphone market. Meanwhile, the long-running dispute with Epic Games over the App Store—Apple’s digital marketplace—continues to pressure its business model. Although Apple largely prevailed in 2021, it was ordered to allow developers to link to external payment options. Apple complied by charging a 27% commission on those external purchases, but courts found it in contempt. The Ninth Circuit Court of Appeals upheld that ruling in late 2025, and after a rehearing request was denied last month, the legal battle remains active. This is in addition to the App Store’s standard 30% cut of sales. Internationally, Apple revealed this week that it faces a potential $38 billion fine in India, where regulators found it guilty of abusing its dominant position in the app market. This regulatory challenge in India is complicated by the fact that Apple’s market share there is still around 9%.

Beyond legal challenges, Ternus must navigate Apple’s deep dependency on China for manufacturing and the immediate pressure to integrate artificial intelligence. John Giannandrea, the outgoing AI chief, formally leaves the company this month following delays in the rollout of Apple Intelligence features. Rather than relying solely on its own models, Apple has turned to external partners like Google and OpenAI to power some of these features. Longtime market research analyst Bob O’Donnell told Reuters on Monday that Ternus’ biggest challenge will likely be improving Apple’s AI capabilities to rely more on third parties. Geopolitically, Ternus will have to manage relations with China, a task where Cook’s established relationships remain highly valuable. Cook cultivated a personal relationship with former and future U.S. President Donald Trump, who remarked upon news of Cook’s retirement that he is “an incredible guy!”

Why it matters

Incoming CEO John Ternus inherits a complex landscape of antitrust litigation, geopolitical tensions with China, and the unresolved challenge of integrating AI, all while managing the transition of Apple’s leadership team.