> it has greatly increased the marketability of live music

Yet that might be a blip. Some of my friends who used to be passionate concertgoers, now say there’s no reason to pay for a concert, deal with getting to the venue, etc. when bands are uploading full-length concerts in fine video and audio to YouTube. Also, since musical tastes have fragmented enormously due to the wider supply, people are less likely to share favourite bands with friends, and so you might not have anyone to go to concerts with you. Concerts used to have an attraction as a social outing, but if you’d have to attend alone, what’s the point?