Right I understand what you are saying, I agree the "DISC" format may not make it for sure!! And downloads will become more of the norm and renting etc... However for the time being the blu ray is a nice touch, but thats not what we are selling here, its about a machine up to date that will not cost too much and get you more or less what you need to enjoy the overall experience of this thing..
AND just like CD will not go away its because some people especially several older generations of 40 and above will likely still just want somebody to hand them a disc to put in and hit play.. So internet etc.. is hot, but not everybody understands it or will have the fastest easiest download equipment to do it.. Get back to me in 5 years, and I will agree the "DISC" itself is probably on the way out..
Again as for SACD I am not enthusiastic about it or Blu ray, but Blu ray audio will essentially be available and superior to even this, again its more of a universal approach and solution..
SACD was the total wrong attempt and not tied to anything or anybodys capabilities in the past.