We need a Music Playlist Synchronization platform

Hello! I was looking for alternatives for Spotify to listen to music and create and share playlists with friends, and found a huge amount of players, both local and streaming, but none of them offered a reliable way to share playlists with friends. So here me out: what if there were a federated, self hostable platform where you can create an account, that provides an API that all the million music app can integrate easily in order to synchronize and share them also with people that uses other apps? Do you think it would work? I believe that if something like this would widespread, huge music companies like Spotify and Youtube wouldn't implement such a thing, but that perhaps would be also a way to "disincentivize" people from using those services!

"Hi friends Me on musicapp1 and Fred on musicapp2 created this cool playlist, hear it out!!"

"Sorry I pay 12$/month for Spotify, I cannot see it"