Someone always pays for the cost to develop and maintain the OS. In the Windows model it's the user. In the iOS model it's the app developer. I don't find the argument that either is superior particularly compelling, and certainly don't see a reason for legislators to be involved in dictating which model a particular company should use.

OSs are expensive things to build and maintain, and I don't take for granted the fact that my iPhone XS Max (2018) is running the latest version if iOS. If Apple's App Store pricing structure makes that possible, then it's certainly working for me.