Elon Musk may see Mark Zuckerberg as a rival, but the Meta chief never used to have any interest in the X owner, author says Mark Zuckerberg doesn't know what to make of Elon Musk, an author who has profiled both tech bosses told Business Insider. https://www.businessinsider.com/mark-zuckerberg-elon-musk-rivalry-breaking-twitter-author-2023-11