5.1 vs stereo on DVD/BDs...?

[summerain]

I think people in general doesn't have home theaters or other devices that makes a real difference playing a 5.1 audio track or a stereo one, so it's pointless to spend more money mixing a 5.1 track if the demand is (apparently) irrelevant. It's how market works.

I'm particularly upset with the death of Blu-Rays on Western market when we are speaking about live concerts, because the video quality of YouTube isn't that great and the streaming ones are not comparable with the BD. But that's me, the demand for these materials are lower and lower year after year.