https://wccftech.com/spotify-blocks-songshift-from-allowing-song-transfers-to-other-services-like-apple-music/

In an unexpected move, Spotify has reached out to SongShift, a music transfer service, and threatened to revoke their API access if they do not stop supporting music transfers from Spotify to competing services like Apple Music and Deezer. SongShift allows users to migrate their music between different music streaming services while keeping their music library intact.

SongShift team posted the following on their blog earlier: