My streaming service is Apple Music. I stream primarily to audition unfamiliar recordings and then if I really like something I buy it. I used to do Qobuz but my wife really wanted Apple and I didn’t want to pay for another service.
I dislike lauding Apple for anything, but many years ago I had made playlists in iTunes. When we switched to Apple Music all my iTunes files, which I hadn’t accessed for a few years and were created before the Apple streaming service existed, have reappeared along with the playlists that I had made. A few recordings in the playlist show as files but no music appears, and when I check it’s because the recording is no longer carried by Apple. That seems to be an issue with all streaming services. Anyway, the playlist themselves have been maintained for years