People who use AI will create a better cheaper product and at the end of the day its use as a new technology is justified. You'll be clinging to an ever smaller raft and eventually have to abandon your ideals.
And at the end of the day art is not stolen when used to train a machine. Copyright itself is an artificial legal construct, and it's the right to redistribute, not the right to learn from art. You can't invent rights out of thin air and get any when they're broken