Well, the N900 does Maemo, Meego and Android (if you don't mind a bit of broken stuff). As always, it really is only a question of the hardware drivers being available. Something I'm sure the average Linux user about ten years ago could relate to, but everything gets better with time. Nokia dropping the ball is a bit of a setback in the short term, but I believe that eventually commonality of components means it will go the way of the PC. In X years installing your own OS will be a viable option.