BluRay and HD-DVD will be just as popular as SACD and DVD-Audio. The cost is too high for the little gains in picture quality and convenience.
Don't get me wrong I love HD movies, but I also have a large library of SACDs and DVD-Audio disks.
The majority of consumers don't care about quality as much as convenience. This was the big selling point of DVD over VHS. It's less convenient for the new formats.
