A related topic.
I know it is not true for those on this forum, but I have pondering the question, is stereo is dead as a concept for the general public?
That is, as stereo was classically defined in the late 50s.
Even then certain marketing people did their best to muddy the waters and mix the definition with that of just High Fidelity sound. I would guess that the average person today still does not think of stereo as a means of conveying 2 channels of audio information to the two ears to replicate some spatial dimension of sound quality and moreover does not care.
I will qualify that, in that there is wider than ever use of headphones/earbuds, but until you get to the audiophile world, there are so many devices with speakers closely spaced or even only one speaker that the whole concept seems more and more irrelevant.