Not entirely related to the topic, but there is also this weird thing where if you're not on your social network's choice of music streaming service you'd feel left out. I find it a bit amusing. My friend group are all on Spotify (which I assume most people are) and when someone shares a playlist they share a Spotify link. I selfhost my music, so I have my own scripts to extract the playlist and fetch the songs and add them to my server. But I suspect it would also be a problem for others who might be using a different service like Apple Music or something.

I know someone in my group who moved from Apple Music to Spotify because everyone else was using Spotify and she didn't wanna feel left out.

I also can't really share playlists with them, which is fine since I only listen to the same 1,700 tracks from the 90s or early 2000s anyway.