I had a similar thought a few years ago when trying to think of "useful" uses of NFTs. It could be great if I could buy music, etc and then play it on any streaming service via some sort of proof-of-right-to-play mechanism.
Thwn, you can stream your own music and Spotify's music side by side.
And, it's a double win, since they're not paying an royalty fees for a single user streaming music they already own.