In my opinion it is mainly because people no longer maintain music collections.

With vinyl, CDs, and MP3s, I could view my collection, select music I like, and build a deep relationship to it over time.

With algorithmic radio, all of artists and tracks become fungible. Easy come, easy go. Sometimes I will find a specific artist or track I like and take control to put it on, but after a month or so it too is forever forgotten.

Another issue is that stereo systems have gone out of style. Great music is enhanced by great quality. Music optimized to play from a cellphone or cheap Bluetooth speaker gives up a lot.

I Miss music, but apparently not enough to build a new collection and set up a stereo