another problem with this scheme is the fact every time the games saves the game will create a save file encrypt it and then upload it over your slow Internet connection, then when you want to load the game you have to wait for the save to be downloaded from ubisoft's servers. this means that the game will take longer to save and load the game especially for people that happen to not live somewhere where there is cheap high-speed Internet and forget downloading your next game on steam well you play your OFF-LINE game.
@TheVoxelman on twitter