Is Old Music Killing New Music?

Chicago had a similar fall when Terry Kath died.
The crazy thing is is that some rock journalists back then and even later on suggested he was depressed or suicidal about his diminishing role in Chicago by mid-70's as they gradually went more into a pop-oriented direction instead of their celebrated late 60's rock-jazz fusion "experimental stage" but in reality while Kath was certainly intoxicated, he just accidentally shot himself fooling around with guns IIRC, at a pool party.