The phone market is quickly turning into a mature business like the PC is today. Essentially all of the major innovation on the hardware side is done and the software side will be where people choose their phone/tablet.
IOS has the best apps, period. Apple needs this to always be the case. Just like people buy Windows because of its apps (games, etc.)
Developers make more money on the IOS platform (by far) than any other. Apple needs this to always be the case.
I submit that Apple needs to drop the commission rate for apps sales from 30% to some value approaching zero. This will starve Android/Win8/BB of developer mind share.
Developers will write great apps, make more money and users will pick the IOS platform because it has the apps (games) they want.