Yes, they actively promote playlists with AI music to corner the "chill work" music without having to pay anything to musicians.

Ah yes. The reason is because all the money is in the chill music. And not in the fact that the most formulaic genres get flooded with easily generated music ("chill work" music especially doesn't even need sophisticated AI, a random number generator would work).

And that's before we ask the question of how to identify AI-generated music (no one asks that question, but everyone wants it removed).