It died mid 80s for me too. That was when the monoculture, where everyone was listening to the same thing, just disappeared. I was just a kid so I never knew what happened. All I knew was that when I was itty bitty, I could turn the dial and find mostly the same stuff everywhere. Mid 80s onwards and it was all fractured. That fracturing continued to the point where it’s like there’s a genre and a band for every taste…which is cool, but now we don’t have a broadly shared cultural experience anymore. Ditto for television. Basically, the scarcity is gone. On the one hand, cool, but on the other, society weirdly suffers.