I paid $1500 for a commissioned painting from an artist I respect and follow as a birthday present for a friend. The painting meant something to me because I worked with the artist to have some input about what kind of a person my friend is, what kind of features I want to see in the painting and how I want it to feel. The artist gave me 5 different sketches and we had tons of back and forth. The process and the act of creating the painting on a canvas from someone I respect is what I paid for.
Even if an AI could generate an exactly equivalent painting, I would pay $0 for it. It wouldn't mean anything to me.