But the gallery takes 50% leaving you a gross income of $12k. Then you pay for your supplies and work expenses. If that's all you do, you end up way below the poverty line.
You can share a photograph of a painting, but it's, just, not the painting. A rip of a CD is nearly identical experientially.
There are many who, however, sell tapes, MiniDiscs, SD cards and other obscure formats with a small but serious following.