I should copyright this Idea I had just a few seconds ago. Listen: Tomorrows mobile gaming device does not have to have any high-end stuff (expensive/limits/aged_out_soon); instead, what it really needs is a decent Screen, nice haptive buttons and broadband as in real BIG-TIME broadband aka. next-gen wifi/wimax.
How it works. The games you want to play on your mobile device, let's say ElderScrolls:OBLIVION!!! won't be on your "iplay"/"psp2"/DS2.0 but on an external server - the grid. You authenticate, request a session and the game will start on the game-server, while you control the character/screen with your mobile device buttons. Sounds crazy? It's doable! I am a marketing genius!