I'd say painting is quite a different business model than making music. There are different channels, people nowadays don't understand the value of music because they "have" everything on Spotify/Apple Music/whatever and there must be a huge tech behind you to sell good quality of sound. You also can't make your own CD (yes you can, but will it work with a CDR recorder?) and sell it progressively for $100 then for $500...
Painting is a tough business. If you have the talent to spend a month on a painting and then find people will happily pay $2000 for it in a gallery, you are a fantastic artist!
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.
Paintings are really different kind of animal.