Yes, they're valuable because they capture many listeners and generate revenue. It doesn't need to interesting for it to be valuable.
Plenty of interesting music flies under the radar. Even without the massive marketing push some artists get, the same artists would still rise to the top producing familiar song structures the average listener can recognize.
Plenty of interesting music flies under the radar. Even without the massive marketing push some artists get, the same artists would still rise to the top producing familiar song structures the average listener can recognize.