All of that can be done while also not being a monopoly. Apple steals apps and recreates their own versions. They can remove your app for no reason on a whim because you might compete with them.

That's what the anti-monopoly is about. Frequently, apples 'pro consumer behavior' is demonstrably false, both from their hardware to their software. It's about making you artificially pay more for less and creating a culture of privledged users that mistake revocation of freedom as 'design' because they have the money to ignore reality.

Apple deserves any anti-monopoly actions it gets.