But if they had paid him to create completely new art, it wouldn't have been an authentic performance of "Take the money and run", but a mere simulacrum. The breach of contract is the artwork.
1 year later... the artist is alive and well, enjoying a mojito on a Cuban beach with a satisfied smile.
It's one of the most entertaining things I've seen this year.
Was the money supposed to be in the artwork as a medium? Maybe there’s a Bitcoin address on the frame or something.