Is there any evidence that demonstrates that the second people buy a HDTV they abandon all standard definition signals? Did Blu-Ray and HD-DVD adoption jump to 30% of the market because all those HDTV owners needed a Higher definition signal? Are all TV stations jumping on the HDTV bandwagon in fear of being obsolete in 2 years?
The answer to all these questions is no ...
Currently it is reasonable to expect that most people are buying HDTVs because they are (pretty much) the only large or flat pannel TVs that are available anymore; in other words the higher definition display is not the main selling feature. It will probably be many years (after all TV signals are not only digital but HD) before people start being overly critical of 480p; currently most people who own HDTVs see their broadcast 480p signal and believe that it is HD.
