> No that is not what people are upset about. They are upset that their life's work is being used without even asking permission, for someone else to get insanely rich. That's what they're upset about.

This is kind of petulant then, respectfully. They got paid to produce that work, and they sold their services for that paycheck and the knowledge that they were putting their work into the world. The fruits of their labor were already being used to make Disney, etc. massively wealthy.

But this is even another step of indirection from that totally fine and reasonable situation: people (or machines) are learning from the work and producing their own. They might as well be angry at interns who learned their style to get junior jobs at Disney and who are now up and coming, replacing them.