Isn’t it strange that the best source for on-demand music on the open internet is YouTube, a video website?
Maybe what’s happening is that music recordings without moving pictures are becoming obsolete.
Attaching images to sound doesn’t degrade the sound. They are purely additive. Almost no matter what the images are, they can only be an enhancement. And if stills along the lines of album art are good, moving pictures along the lines of a music video are better.
Why not always use video? Why continue to release pictureless audio?