the question is what you trying to sell and to whom?Are you trying to sell a whole media replacement system for the home that can handle music, video and stills etc etc? Is PS3 trying to do a PSP with an all in one divice? and WHO is going to buy this? You noticing the next gen game consoles are leaving people without HD and Broadband in their wake.
my little belief is that the medium selected, whether blu ray or otherwise will not matter in the long run.with coming improvements over the next 5- 10 years in internet access technology will allow for continuos downloading of any and all media directly to the system for which it is being used, in fact soem companies already started this trend and it has been successful to them, more than likely it will continue to improve.