Radio is a lot simpler. Used to work in that realm back in the Napster and Kazaa days.
You have a broadcast station. You know that estimated 30k people are listening. You sell those numbers to advertisers. Now you play a song 1x, you record that fact. At the end of the month, you tally up 30k users for that artist and you cut a check to ASCAP or BMI. Thats it. You just keep track of how many plays and your audience size, and send checks monthly itemized.
They were downloading pirate Britney Spears over Napster and playing it on air. And since 100% royalties are paid for, was actually legal. Not a lawyer, but they evidently checked and was fine.
I'd like something similar for video. Grab shows however, and put together the biggest streaming library of EVERYTHING, and cut royalty checks for rights holders. But nope, can't do that. Companies are too greedy.
That shows how tech monopolies are bad for content creators.
Like Spotify monopolizing music streaming, and now creators have the choice of getting virtually nothing from Spotify or literally nothing by avoiding Spotify (unless you're already Taylor Swift).
With radio stations, no single radio station could really hold you over a barrel, because there were still a lot of other radio stations to work with.