@SteveRichter: how was Windows Mobile a flop? It certainly wasn't a flop commercially.
I don't know enough about it. As I understand, windows mobile is being withdrawn? Can we say the average handheld phone sold today has more computing power than the first PC? Yet you cannot run a Microsoft OS on many of these phones? If a phone runs android, could I, should I be able to load windows mobile?
Well, if you don't know enough about it, how can you tell it was a flop?
And since when you have been able to run different OSs on mobile phones? (except for acts of extreme hacking, that count for what amounts to statistical noise)