Most radio stations only played the most blandest junk music, even from great artists. Seems they would rotate the top 3 songs even from the absolute most popular musicians. I must have heard Fear of the Dark by Iron Maiden >500 times on the rock stations in Stockholm. The Prowler? 0. Maybe some 3am DJ could play some cool songs on occasion, like you said.
There was always very little variety.
The station wasn’t something I was particularly into but nobody is doing that to listen to Clearchannel crap.
A local example is "Easy 104.1" here in Reno. I stumbled on it by complete accident about a month ago, and after said month's worth of daily listening I haven't heard a single song played twice. Everything from funk to R&B to alternative rock to adult contemporary to new wave and everything in between, from the 1960's to the 2000's. Songs I've never heard before, songs I've last heard years ago, songs that I last heard yesterday. Loreena McKennitt's "The Mummers' Dance" came on today and that's a song that'd been playing in my head for multiple decades with no idea whatsoever what it's called or any of the words in it (eliminating any possibility of looking it up); now I've finally found it thanks to some random radio station that plays everything that the other stations don't. And if that ain't enough, the "commercial breaks" usually are just one commercial - or hell, often half of a commercial.
Because of the way a lot of stuff around broadcasting works, a small-ish life insurance company ended up with a 100 kW FM station (along with their existing TV and AM stations), a lawsuit challenging their AM, FM, and TV licenses over their (implicitly and explicitly racist) behavior, and as a result, a bunch of very diverse DJ's, mostly in their 20s, with almost no oversight.
When the station was sold, the new owners immediately switched to country, which AFAIK it still is. The fact that local bands at the time wrote songs about it should give you a hint. Yes, the movie is a big late-Boomer/early-GenX reminiscence-fest, but there's a lot of interesting detail there. The DJ's partnered up with producers, bringing big shows to a relatively small city. Some started a record store. One ended up in charge of organizing group tours to concerts in near-ish cities (still 3 hours away in any direction) because, as he put it in the movie, he had a better weed connection than anyone else at the station and so could actually bring enough for everyone.
It sounds like you were listening to top 40 stations exclusively.
Gotta check out the good stuff, stations like KBCO in Colorado or any of the more local, music focused stations
By that metric, Spotify is actually doing better than they did, if memory serves.
The modern equivalent would be a curated stream, station, etc.
You could time-travel into the future by moving your radii from somewhere else to a musical cultural center like New York or Seattle. People would pay for subscription services to listen to radio stations from those areas.