But that's the problem. Smart phones have a high level of friction to change operating systems. The phones are expensive and there is a decent amount of platfor

But that's the problem. Smart phones have a high level of friction to change operating systems. The phones are expensive and there is a decent amount of platform lock in. If developers want to have a profitable business they pretty much need to build for iOS or Android. The developers are creating value for Apple by improving their app ecosystem but Apple is acting like they are doing the developers a favor.