Seems most people, who enjoy watching films, are happy to stream and, many probably don't care about the best image and sound quality, as long as it is acceptable, just as most people don't care about HiFi.
That's the point though isn't it? If the quality is
good enough then why pay extra? I've watched movies on Sky Q and have watched 4K movies on Sony Bravia Core, as well as having a small number of 4K Blu-Ray discs and I honestly can't tell the difference to any worthwhile degree.
Same with music, there are plenty of Bluetooth speakers around now that give a good enough listening quality for casual listening, which is what most people do. You didn't get that 10, 20, 30 years ago and had to buy Hi-Fi to get any sort of decent quality sound, there was a vast difference between Hi-Fi quality and your average "stereo", but that's not the case any more.
I have some basic Hi-Fi stuff but I've never understood the point of paying thousands of pounds for it, although to be fair I wear hearing aids these days so much of the quality would be lost on me anyway. I want as good a quality sound as I can get but does the high end stuff really make enough of a difference for people to want to pay for it? Same with video, and the fact that nobody is buying 4K Blu-Ray players suggests not.