Digital distribution to take off and beat HD optical needs sweeping changes. First, you need much much larger hard disks. Second, you need competitive bitrates. Third, you need to match the features: sound tracks, subtitles, extras. Fourth, you need to to operate within the household bandwidth that most consumers outside of Korea and Japan have. Fifth, you have to convince the studios to get onboard.
Most industry analysts think true HD digital distribution is atleast 10 years old. Those people trying to sell it of course will overhype that its just around the corner, but of course, HDTV was just around the corner 10 years ago and it took ten years and it's still not mainstream yet.
Simply downloading a VC-1 encoded file does not give parity with optical disk. Optical disks are more than just the video/audio coded streams.
Do I detect that Dave approves of disingenous corporate behavior on the part of Microsoft, in trying to throw a cog into industry resolution on next-gen optical formats, just because it wants to be the gatekeeper of digital online distribution. The prolonging of the format war is bad for consumers, since whatever you think of digital distribution, optical distribution will still be an incredibly useful technology, and even desired, by many consumers, before the so-called digital distribution future nirvana.
It seems like people now freely admit that's whats happening, as well as bald faced lying by MS's media people like Amir, as to their true intentions.
The two can co-exist. And it all comes down to consumer choice. I have an HD-DVD player and have also downloaded 720p VC-1 encoded movies on XBL Marketplace. While there is a difference in quality I think the vast majority of consumers will say it's 'good enough'. Just look at how popular MP3s have become compared to CDs. Music fans have shown they will take a slight quality lose for added convenience over a CD anyday. Why wouldn't this be true for Video aswell?