It's almost as good as the 'future proof' or 'untapped potential' argument...how long are you giving them to realise this potential? Since when has this ever dictated the lifespan of a console? By the time it's taken advantage of the next gen will be among us, potentially wiping away any extra potential it has. Developers won't care about the extra space of a blu-ray disc if denying a 360 release means a smaller return of investment.