Here's a video of a Russian news report. (Why can't we get such coverage in the U.S.?) Lots of neat footage: the end of the match, Carsten Hensel letting out a yell, a partial tour of the rest area and the bathroom, and some audio clips from Kramnik (in Russian).
Because very few people care. Not covering chess in-depth is a perfectly sound decision, both from a business and a news standpoint.
But so what? The Internet makes it possible to get all the coverage one could want. So what if CNN is too busy with Mark Foley and Madonna's adoption?
After all, things could be worse, and no long ago they were.
I was rereading Searching for Bobby Fischer recently, and back in 1985, Fred Waitzkin actually had to call Pravda and con some guy into giving him the moves of the final Kasparov-Karpov game as they came over the Telex, and then call up GM Lev Alburt to analyze the game.
She is basically clueless but Shelby continues to prod her and all the other analysts on the show their thoughts on the position. Only Spassky seemed to understand the position, however Lyman never allows Boris to finish his observation. After that Boris noticably remains fairly quiet for the rest of the game and the show.
If I remember correctly Boris was in New York for only a few days and never appeared on any more of the shows.
I got the impression Shelby really didn't want Boris to take over the show, but with Spassky's engaging personality and the chess insights of one of the greatest World Champions it was impossible without excluding him completely.