The way these image generating neural nets are trained is illegal. They copy and use other artists' work without asking them or paying them. There's a lot of legal exposure here - why hasn't anyone taken advantage of that yet?
>>silent+(OP)
In the US we have fair use, and it's not clear at all to me that this wouldn't count. If I took every image on artstation and averaged all of them (creating a muddy mess), I think I would be legally able to distribute the result without compensating or crediting the original artists.
In the EU, UK, Japan and Singapore, it is explicitly legal to train AI on copyrighted work. I saw another comment say that AI companies train in those countries.