Re: Bluray vs. HD-DVD?
blu ray is certainly big out there, whether it is in standalone players, or PS4s and Xbox ones, or in the larger scale archive space(el reg has had a couple articles on massive scale blu ray archiving).
The things you speak of are nice and fancy, but the reality there is a long time before traditional storage goes away, and pretty much all of the major vendors(I can't think of any exceptions) have products or technologies in the newer spaces, and have had them for years.
People have been saying for as long as I can remember that tape is dead, yet capacity shipped for tape continues to grow.
Storage is a tough thing to get right, really complex, distributed storage even more so.