Regulating the app store isn't beneficial. They should be able to reject bad apps for being bad without having to go to court over it.
The problem is that they restrict the user from using any other app store. So then when they get it wrong there is nothing anybody can do. And then they have less incentive not to get it wrong, because it's much harder for them to lose users to a competitor, so then they prohibit things the user actually wants more often.
The problem is that they restrict the user from using any other app store. So then when they get it wrong there is nothing anybody can do. And then they have less incentive not to get it wrong, because it's much harder for them to lose users to a competitor, so then they prohibit things the user actually wants more often.