Microsoft is competing with Android in the mobile market. And so far, Android is wiping the floor with everyone else in terms of market share. It would appear that the bulk of the mobile profit goes to Apple and Samsung while everyone else is barely breaking even or bleeding cash. That includes Nokia, Windows Phone's biggest device maker which just sold its handset business to Microsoft. And despite making very little headway in terms of profits from Windows Phone, Microsoft is making boat loads from licensing patents to Android device makers.
About $2 billion a year.
What's interesting is that with this money, it's poured back into losing ventures like, you guess it, Windows Phone.