graeme_p - 10:51 am on Sep 6, 2010 (gmt 0)
Microsoft has shown a history of being successful in a market without being first to innovate in it.
Conversely, MS is not always successful, especially in mobile devices. Ever heard of Zune or Playsforsure?
Google doesn't really care about Android developers making money; they'd rather have a bunch of free apps so that they can make the money.
Consumers wall also like free apps.