"These new holographic discs are amazing, but HD-DVD and BlueRay are both capable of holding a full movie at 1920x1080, that much added storage isn't needed for consumer movies."
In the near future (within 20 years), quotes such as these come back as looking pretty darn funny!
Right along the same lines as;
"I think there is a world market for maybe five computers."
- Thomas Watson, chairman of IBM, 1943
or better yet;
640K ought to be enough for anybody.
-Microsoft Chairman Bill Gates, 1981
The truth is, that we can't accurately predict what technologies of the future will emerge. Yes, everything appears to be getting smaller and everything appears to be going faster, but who would have thought that optical media would bring full length motion pictures, with descrete multi-channel audio (not to mention extras) into our homes, back in the 1940s!
As far as the entertainment industry's use of holographic storage? It will be used in the future, perhaps not in our homes, so much as future digitally projected films at your local "cine-mall" (did I just coin a new word?) requiring even greater amounts of data.
Heck, perhaps 3D holographic entertainment may become a reality. Given the larger amount of data required to reproduce three dimensional image, technology such as this may actually prove to be an integral componant.
...just my observational $.02