I wonder how long it will take for such measures to reach Twitch and Youtube. I remember some weeks ago some streamers started to get threats from DCMA over playing music on stream, i think some of them even got their clips and videos removed due to copyright claim.
I think this is purely music companies decisions, even the artists are not aware of this.
A lot of artists (or their managers) are! I’ve been watching some YouTube videos from Ricky Beato and he talks about “blockers”, and within the same label you have different artists that block or don’t.
Twitch already mutes parts of VOD's (past streams that are archived) when they detect copyrighted music. There is a loophole though, you can stream video-game music all you want because detecting those would mean they have to remove 90% of the videos on the website.
There was a scare on Twitch a couple months ago where a few big streamers got dinged for infringements (along with another big gossip streamer saying he had sources that claimed there's companies with the tech to copyright strike every offending streamer on Twitch right now if they wanted to), but since then nothing has happened. Plenty of people play copyrighted music, and Twitch continues to mute it in the VODs.
I think this is purely music companies decisions, even the artists are not aware of this.