Microsoft, Apple, and Nvidia are competing for the title of the biggest company in the world in terms of market cap—and they’re going head to head. Apple’s AI announcement during the Worldwide Developers Conference (WWDC24) briefly put it ahead of Microsoft, but it fell back to the number two spot after some profit-taking. Meanwhile, Nvidia, the newcomer in the trillion-dollar club, is quietly gaining ground on the two established tech giants, driven by the massive demands for its data center products and services optimized for AI. The world’s five most valuable companies—including Google and …