Doesn't this have a lot to do with the FCC regulations against network ownership of more than a certain number of affiliate stations in an effort to maintain diversity of voices in local broadcasting (think Clearchannel in radio, Knight Ridder in newspapers)? NBC locals have sold lots of advertising for the games and they want to make sure that they have audiences rather than losing people to satellite feeds of other locals.
I guess I'm lucky that although my local is not NBC O&O (and I pick it up OTA), they are broadcasting the HDTV broadcast 24/7 on their digital channel.
I certainly would like to have the SDTV broadcast also for live coverage. The idea of using a subchannel for SDTV is great! Out of the digital OTA locals I receive: NBC, CBS, Fox, and the WB only broadcast digital on a signal channel, ABC on two subchannels, South Carolina PBS on three (two SDTV and one HDTV), and NC PBS on up to five at one time (often fewer to give more bandwidth to the other subchannels)!
Dumping my cable provider I will no longer have access to an SDTV NBC affiliate, but frankly I like being able to watch the highlights in HDTV even a day late.
NBC and its independant local affiliates have no doubt run cost-benefit analyses in producing full-scale HDTV coverage and figured that with this service they will cover most people.
Those folks who are knocking NBC, rembmer that NBC and its affiliates (Bravo, CNBC, MSNBC, Telemundo, etc.) are broadcasting something like *triple* the hours of Olympic coverage than any previous olympics. SDTV, granted, but for most people that is fine!
If there is a clamouring for more HDTV coverage I should think there would be a lot more of it by the time the 2006 winter games roll around once a lot more people have HD sets and receivers.
In other words, its all about the $.
CDH.