Surprising exactly no one, "a U.S. judge on Thursday dismissed X Corp's antitrust lawsuit ​that accused the World Federation of Advertisers and major ‌companies including Mars, CVS Health (CVS.N), opens new tab and Colgate-Palmolive (CL.N), opens new tab of illegally boycotting billionaire entrepreneur Elon Musk’s social media company.
U.S. District Judge Jane Boyle in the federal ​court in Dallas said, opens new tab X failed to show it had ​suffered any harm under federal antitrust laws."

While I'm sure Elon would have preferred to win this, the chilling effect from filing this suit in the first place was probably a good enough win for him anyway.