Windows 10 has seen over 110 million activations according to Microsoft yet no figures regarding uptake on Windows Store apps. We still see apps leaving the Windows Phone platform (Mint app last week for example). We don't see any devs praising Universal Apps. Are those 110 million users buying lots of apps?
Microsoft are shouting loudly about the number of Windows 10 users but are saying nothing about how those numbers are affecting their Windows Store apps.
Also Android does make money for Google, not sure why you think it doesn't.