Google have mentioned that they will maybe charge developers to pay to use Android O.S which of course is a big threat as many developers are attracted to use Android for being open source in difference to Apple.
Personally do not think that this will happen as Google could loose too much starting to charge for usage of Android, revenue or not.
My real reason for posting is not so much for this news but one of the responses by the European Google CEO Sundar Pichai wrote. Do agree with a lot of it.
Read it here: