It is worth recognizing that Microsoft tried to recreate the PC ecosystem with mobile.
Steven Sinofsky

Steven Sinofsky I accept my analysis was a quick and simplistic view from the trenches. Given your view of the land then and the view of the land now would WinMo as an independent entity but with MS backing (a la Android) have succeeded?

Japan was unique with its cHTML plus micropayments DoCoMo platform and a parallel post could argue why (despite attempts) they were not able to export that as a platform to other geos.