> it was mostly up to Microsoft to make sure that the OS continued to work flawlessly I would say that's the difference: Microsoft abstracted most of the diffe

> it was mostly up to Microsoft to make sure that the OS continued to work flawlessly I would say that's the difference: Microsoft abstracted most of the differences through their APIs. Android obviously handles some of these issues, but devs have to pay far more attention to degrading gracefully on different screen sizes, lack of multitouch, lack of hardware keyboard, etc. Of course, web devs have had to play a similar game with the various browsers for a decade and a half, so it isn't necessarily a show-stopper for the ecosystem.