If only they used that for a mmo right?
Streaming a mmo means the same thing as connecting to a mmo's server, the server determines who gets what in a mean to secure the game. This means no need to install, just use a live stream, no need to worry about lag or latency if you are internationally far away (video packets would still be fast enough I guess?) but there might be delay in controls...
Heck if Onlive where to cater to the many subscription based mmos, is able to offer 95% graphical sync (you know how the graphics blur), and brings in the big gun mmos from the east... Like Blade and Soul, ArcheAge, and such.