well there's plenty of reasons for that. Receivers for example, aren't usually a year to year purchase. Much like a television, you keep that sucker for several years, if not decades before you upgrade again. I mean c'mon, my parents just got the HDTV about 2.5 years ago... I don't think we'll be upgrading anytime soon. And the tube downstairs is still good for several more years. So receivers, those without a DTS decoder, are still very widespread much like non-HDTVs. So its not the tech is inferior since the base is so small, its that getting DTS in the home is not an affordable upgrade for many people. Unlike say... buying a new DVD player for 30 bucks. Can't say that about your Harman Kardon AC3 5.1 receiver you bought ages ago.