I’ll admit to arrogance on blu-ray, I have never owned a blu-ray player. My assertion was in regards to DVD, which I do still own a player for and use reasonably regularly. I don’t seriously think anyone is buying DVDs for the purpose of quality, since afaik they are still only 1080p max. At the very least, most of the DVDs that I personally own are still SD, and as such look about as good as 4k streamed with compression.