8. Tim Cook, Apple
Estimated net worth: $2.4 billion
Apple has pioneered game-changing devices, like the iPhone, iPad, and Apple Watch, as well as digital ecosystems, like the iCloud and Apple Pay network. But it's seen as lagging behind competitors like Microsoft and Alphabet in the AI race.
In 2024, Tim Cook, who has been Apple's CEO since 2011, introduced his vision for a privacy-focused Apple Intelligence that will be integrated into iOS apps. But many in the tech industry were less than impressed, with critics arguing that the vision comes too late, is less than innovative, and is overly dependent on OpenAI's ChatGPT, which has faced mounting privacy concerns.
Catching up in the AI race isn't the only challenge Cook faces. iPhone sales account for about half of Apple's annual revenue, and smartphone sales are slowing worldwide. At the same time, Cook must navigate a growing U.S.-China trade war and uncertainty surrounding Trump's tariffs.