Here is my christmas story about the average consumer.
About 2 years ago my brother asked me which TV he should buy. I suggested the 40" Toshiba and that is what he got. He had a 480i only player so I gave him a 480p DVD player. (Toshiba SD-5109) I hooked it all up and did a full calibration.
I went over his house this year and he got rid of the 5109 and is now using an Xbox. The Xbox is not 480p. Next I noticed cross-color on screen and found out he was using the composite video out of the Xbox.
His receiver does not offer component but it does offer S-video switching. He does not want to change the input on the TV and on the receiver. The problem is he owns a VCR and it only has composite out. The receiver does not offer a comb filter so he feeds composite out of everything because it is easy.
He also watches everything in full mode because he does not like bars on the side.
I could not get him to go back to 480p even after I showed him all of the issues. Quality takes a back seat.
He had no interest in DVD-A or SACD. He is happy with MP3s on his PC. I don't think he even buys CDs anymore.