It's the same play in both cases - creating extra friction when you step outside of Apple's ecosystem.
Users who switch to an Android phone aren't any more "lost" to Apple than developers who publish on Android. They often still have iPads, iPods and/or Macs. Some might still buy music and/or video from iTunes. And so on.
In both cases, Apple is choosing to risk losing X as well in order to increase their chances of holding onto Y. And since we see other companies making both choices, it isn't an obviously winning or losing play in either case.
Users who switch to an Android phone aren't any more "lost" to Apple than developers who publish on Android. They often still have iPads, iPods and/or Macs. Some might still buy music and/or video from iTunes. And so on.
In both cases, Apple is choosing to risk losing X as well in order to increase their chances of holding onto Y. And since we see other companies making both choices, it isn't an obviously winning or losing play in either case.