Billionaire Elon Musk said on Monday his artificial intelligence start-up xAI would take legal action against Apple , accusing the iPhone maker of breaching antitrust regulations in managing the App Store rankings. “Apple is behaving in a manner that makes it impossible for any AI company besides OpenAI to reach #1 in the App Store, which is an unequivocal antitrust violation,” Musk said in a post on his social media platform X. “xAI will take immediate legal action.” Musk did not provide...