Android and iOS are effectively in a different market than the original Windows Mobile because they were designed from the ground up to be used only with fingers on capacitive multi-touch screens. Same thing with the tablets. Windows was designed to be used with mouse and keyboard, which is why it never really worked on tablets. Windows Mobile seemed more like an attempt to make a phone as much like a Windows PC as possible, rather than a genuine rethink of how people would interact with mobile devices. Windows Phone seems much better, but it looks to be too late to get a foothold in the market, even with Microsoft throwing money at it.