Studios could and probably will train their own AI models to avoid legal trouble and achieve custom results.
Beyond AI generated textures, I think it's just a matter of time before AI generated maps, NPCs, game mechanics, etc. become commonplace.
Though, I suspect there will be actual companies that train completely on data they have legally purchased that then sell it legally to other companies. They greyzone of not knowing if or how much art was taken without permission is the issue at hand.
Though, I suspect there will be actual companies that train completely on data they have legally purchased that then sell it legally to other companies. They greyzone of not knowing if or how much art was taken without permission is the issue at hand.