Proletarization? So in your view, making art is not productive labor? I am talking about normal-ass people that make ends meet by doing art for other people that pay them to do it. Who are you imagining does most of the art you see out there?
Also, if you think that AI companies will defeat copyright, I have a bridge to sell you. The current lawsuits etc. will neither end copyright, nor will they end AI companies. These entities will come to an agreement where one gets rent from the other, copyright law will not change meaningfully, except to fuck over normal people ever the harder. Siding with capital against capital never ever works. They know who they are and who isn't in the club.
This is why I am on team Fuck Ai, shut it all down. Is that pie in the sky? Yea sure. But so is your idea of the left siding with OpenAI to defeat Disney and that somehow ending well for the left.