They don't have to sell to anyone. If this takes off Onlive can be richer than MS, there is also $ to be made by licensing out the compression software to other cloud providers.
NB: I really have my doubts about OnLive going "fully live" for quite a few years.
I know it's not quite the same but didn't Nintendo had a console that allowed checking shares\stocks online and such? I know, it's not gaming but just thought I'll throw that in.







