"There’s another fly in the Android ointment: Android doesn’t necessarily make Google much money, and sometimes not much for its maker partners."
This is the part that gets overlooked. Every android powered phone nets Google about $10. Compare that with the $600 device which Apple designs, manufactures, distributes and maintains. Yeah. Sell all the droids in china and Google won’t match the iPhone revenue Apple clears.
(Source: Fast Company)