Lots of good bands listed here, but one swallow doesn’t make a summer, and I believe that’s the point. My gut is that a combination of technology (synths), corporate investments, MTV elevating sounds based on what the bands looked like, and a generally inability for musicians to fit the new sound (punk) into a promotable box. Ironically, the free access to 4 track recording, mixed with a constant stream of disappointing popular music, kicked off the local music scene, which is where I believe the 80’s get saved. Labels like Discord in DC and Touch and Go in Chicago started releasing unique bands and developing their own sound. Kids were busy making music, not collecting music. They watched each other play and avoided the arenas. Lo-fi was the 80’s saving grace and informed later ideas - for better or worse maybe. Don’t even get me started on Grunge.
All of this digresses from the point of the post - what happened to album orientated rock. I dunno - cassingles? The Sex Pistols vs Pink Floyd saga? Casio keyboards? Mix tapes? Smooth action cue levers? Duran Duran’s haircuts? Take your pick maybe. In the ebb and flow of musical taste, every new thing is built on the rubble of its predecessor. The concept album had to go - it was just in the way.