The system you speak of is very much what Maemo was developing and what MeeGo seems to also be following. If the hardware is up to spec, releasing new software comes easily to a point, and then homebrew/community developement takes over. How this will work when carriers are onvolved and have their hooks into the OS/platform should be interesting, but has pretty much be the direction for open source mobility for a few years now.

By the way, nice traffic inducing title.