You are telling me this when people are still buying black-&-white TVs? LOL. End of story, indeed...
"A chicken in every pot, and a scaler in every TV"
Besides, an anamorphic DVD mastered from the film will still have more visual information than a non-anamorphic DVD mastered from the film, so tell me - which would you rather scale from?
Now, whether or not HD-DVD uses "anamorphic" or a wider frame altogether remains to be seen - it's so up in the air it's not even funny. SD-DVD's gonna be around for quite some time.