Interesting article -
http://techland.time.com/2011/03/31/google-cracks-down-tightens-up-android/
http://techland.time.com/2011/03/31/google-cracks-down-tightens-up-android/
There's also a philosophical issue at work. Google likes to say that Android is open, referring to the fact that the company makes Android's source code publicly available. The more restrictions Google places on Android, the more closed the software becomes. In a sense, it's an admission that Apple isn't wrong about everything.