So the record labels sue the AI companies for copyright infringement and get settlement money and licensing deals in return, then the artists have to sue the record labels for a piece of that new revenue. The labels won't just pay the artists under the CBA, the artists' union has to take them to court to prove the "new use" provision applies.
And meanwhile, slop music is satisfying some of the demand for art, so even if artists do get their slice of the pie, they are not the only bakers anymore.
Seems like programmers whose code was used to train AI coding agents could make an analogous case but I guess much of their code was open source or given up to the models freely?