I guess it would also depend on whether the range of drives used in 360 consoles could handle that format. Are those discs supported by all DVD drives?
Maybe cost is a factor too, if 1 of those discs costs more than 2 DVD9s, plus MS use a particular structure for their discs that only actually leaves around 7.3GB of space for a game. Perhaps that would also be affected if those discs were used? There has to be some logical reason otherwise they could double the space easily.







