“Google quietly paid game developers hundreds of millions of dollars in incentives to keep their games on the Play Store, a newly unredacted complaint from Epic Games in its antitrust suit against Google alleges.”
Google says Android is open and anyone can sideload. Then Fortnite skipped the Play Store and Google spent hundreds of millions making sure nobody else tried. It called the program Project Hug. Paying developers not to leave is how you keep a 30 percent cut that couldn’t survive competition.