My sim was in the Painter career and sold many paiintings for over $3,000. then she became a vampire and her children immediately were painting the same pictures.
I would love to see what they had in Sims2, where you could download paintings and have your sims paint them. I had Van Gogh, Matisse, Monet, etc. etc. and they looked great on the wall.
Just like with music, eventually everyone plays the same tunes.