Because that is not what's happening. My friends that work as illustrators for PC and mobile games say it's the exact opposite. AI is used for the bulk of the creative work - composition, posing, even the general artstyle. Illustrators are then tasked with "fixing" visual artefacts, stitching together generated images and giving the final polish. They describe it as being reduced from a creative writer to a grammar checker.
It's tempting to just say that creative work that can be automated this quickly should be automated so that artists can focus on more creative challenges, but this is not how it plays out in practice. Rather, this only allows companies to cut down costs. It is already extremely difficult to find work which will pay a livable wage as a creative. AI has already caused layoffs and negative wage pressure on remaining employees. The only thing that AI has done (at least among my circle of friends) is reduce corporate costs and increase antidepressant prescriptions.
It's tempting to just say that creative work that can be automated this quickly should be automated so that artists can focus on more creative challenges, but this is not how it plays out in practice. Rather, this only allows companies to cut down costs. It is already extremely difficult to find work which will pay a livable wage as a creative. AI has already caused layoffs and negative wage pressure on remaining employees. The only thing that AI has done (at least among my circle of friends) is reduce corporate costs and increase antidepressant prescriptions.