Making art is already not making much money for the vast majority of producers (outside of 3d modeling). There really aren't very many jobs in making art. I'd reckon most people are artists because they love doing it.
AI will need some favorable legal precedents to avoid getting banned though, or else they'll have to only train off CC0 Flickr/Wikipedia scraping.
I also think it's a more obvious problem that it can reproduce copyrighted characters by eg prompting for "Homer Simpson".