With the App Store, Apple’s really brought this problem upon themselves whether they agree with what they are told to do or not. Any sort of centralized distribution mechanism is always going to be the first thing an authoritarian government targets when trying to take down content they don’t like. On iPhone it’s even worse because the App Store is not only a centralized distribution mechanism but the only distribution mechanism. If you want something gone, you can just force Apple and that’s that for iPhone.