Technically, a clever someone with too much time on his hands who is unable to leave a challenge alone, can probably make it possible through virtualization... If he could get his hands on Windows Phone 7. Lots of stuff have been run using virtualization, like Windows 95 and Android. Experience suggests that would only happen quite some time from now, and only as a proof of concept that would not run very well beyond the fact that it run at all. In practice, since this sort of OS frontier people no longer feel that Maemo is the future (while MeeGo is), it just will not happen at all.