Robin hood investors disliked a move by management and voted with their feet to place one star reviews.
Google removed them all.
You can but ma private companies if you want but you're only pointing out how monopolistic these platforms are. Good luck with antitrust Google. You gonna get fucked over a barrel. People are waking up.
Google is not a monopoly in the App Store market, but even if it were - how are you going to stop it? Google's property is it's property - it is entitled to do as it pleases. At what point in libertarian ideology is the government supposed to step in? And when it does: and do what? (while still being plausibly a libertarian movement).
"Do what you want" in the free market is exactly this behavior.