So anyone can put stuff onto DSPs - especially with something like Distrokid.
When you upload to a distributor it asks you if your music is already online and matches it to the same artist profile
There are sometimes some artists who protect against people people able to randomly upload in their name (I’ve seen people struggle to upload an old Tiesto remix because Tiesto’s people need to approve).
Basically it comes down to being able to police it. With apparently 40,000 tracks going online each week the platforms can’t do it so it then rests to artists.
Some keep a close eye on it, others don’t. Some people get round it by putting typos or just using a different name so that it isn’t instantly noticed by the artist/ their team.
Case in point. Someone has randomly put the missing radio edit of Paul Johnson’s Get Get Down online. It’s actually benefitted from being a track that was online for a while, put on tons of playlists and sat dormant when the track was taken offline. It’s given the “artist” 40,000 monthly listeners from that one track alone.
As for Liberty X, yes when they went indie for the third album there was clearly some deal which meant a label could just re packs it again and again.