I believe that the PS Go and DSi are stupid, because the games are a couple GB, and it will be like the Phantom console where nobody wants it due to the medicore graphics, gameplay and large burden on your DSL or satellite bandwidth cap. It's different than downloading illegal NES, SNES, Genesis, Sega CD, PS, PS2, GBA games. Those have comparably small downloads compared to this.
My theory is either manufacture is committing "a Sega Nomad" if they don't allow PSP and NDS be the primary platforms and distribute gaming media on a chip. It wasn't meant to be!