I know there is also the influence of television and being able to zap away so it is a weightier decision to go into the theater than it used to be. And probably attention spans are not as strong as they used to be, generally speaking.
We've been able to record the music of cultures that did not have recording, and thus preserve it. But there is also a negative aspect to this and that is the effect of the intrusion of the West on such cultures.
You have to act and this is something that happened in abstract expressionism too, it was a discovery particularly in De Kooning's paintings, great paintings. There's a lot of speed in his work and the speed produces things that only speed can produce.