Elon Musk's acquisition of Twitter in 2022 for $44 billion and subsequent changes to the platform have escalated his rivalry with Mark Zuckerberg, according to a new book by Ben Mezrich. The book, 'Breaking Twitter: Elon Musk and the Most Controversial Corporate Takeover In History', suggests that Musk sees Meta Platforms Inc CEO Zuckerberg as a rival and that the takeover of Twitter has had a potential negative impact on Musk's health and reputation.