I think integration with things like Home and LBP, mobile TV next year in the US, and GPS will lengthen its lifespan. The games is a little bit tougher. What you have is the DS, with much less power but games designed for the touchscreen, and the Wii being more powerful and games designed for the Wii-more making it hard to port games.
It could take on all of the PS2 game remakes, but it needs a second joystick. IMO thats what killed the PSP, having only one joystick. I got so frustrated playing GTA Stories that I just stopped. No third party will support making a game for the PSP because of the attach rate and piracy.








