> Let's say, just for the sake of argument, that AI can eventually serve to level the playing field for everything. It outputs novels, paintings, screenplays - whatever you ask it for - of such high quality that they can't be discerned from the best human-created works.

This requires the machine to understand a whole bunch of things. You're talking about AGI, at that point there will be blood in the streets and screenplays will be the least of our problems.