It may also be that they were one of the most prominent faces of Rock’s commercial and creative decline. One of the best YT interviews I’ve recently seen is Rick Beato sitting down with a music industry veteran to discuss why rock music declined so rapidly.
tldr - prior to the 90s radio stations were largely independent and had local DJs constantly searching out and playing new and original local music as that DJ was incentivized the find the “next big thing”, I.e. a DJ could say “I was the one” who broke Some Big Band on the national scene. However, in the 90s legislation was passed that allowed for the monopolization of radio stations. Many were bought out by large central corps. This resulted in the demise of the local DJ searching for new music, instead replaced by the DJ who is told by those “up top” what to play. Thus we witnessed the death of new and creative acts, replaced by bands that were “formulated” by corp minds.