I'm pretty sure Blu-ray will stick around for quite awhile, as of today, in the United States full 1080p Blu-ray quality movie downloads are not practical, we're talking 25-35GB movie files, not only would that require an insane amount of bandwidth for the seller and the consumer, but it would require massive harddrive space.
I mean, I have 10GB of harddrive space left on my 500GB drive, and all my TV shows are in SD or below SD quality, and I have about 20 movies in 720p, the rest of my movies are DVD quality.
Harddrives may be becoming cheaper, but for HD downloads to become a realy competitor, you'd need mass adoption of Super fast internet, massive harddrives, and probably a substantial adoption of Wireless-N for family homes.
It's just not practical, and won't be for quite sometime. Not to mention movies aren't as enjoyable on computers, and your Apple TV/TIVO HD/ HD DVRs can only hold so much.
Blu-ray executives can go ahead and enjoy that champagne.
