Something that people are quickly going to learn is that too much of a thing makes it less valuable.
Every time I see AI generated art and text, I'm like, yawn, oh look, someone spent 5 minutes making that.
Discussion
Yeah, but I enjoy abusing it a bit haha 
"All prices are eventually reduced to the marginal cost of production." I.e. calculators
Paraphrased ~Jeff Booth
Some people worry that it kills art but actually it just weeds out the people who are good copiers and leaves the original thinkers. Every AI image copies from other images and one of the things that it can do is copy the style, and recompose the image.
This is also why it still makes 6+ finger hands very often. If the prompter doesn't change the prompt and specify the finger count then who's the idiot?
I see your point.
I'd also compare it to the early 90's when I could charger $1k for a basic website. Soon thereafter tools like MS Frontpage became available and I could only charge a fraction for the same work.
Fast forward even more to today and basically the equivalent of a SQL query can spit out a multi-page static html site inclusive of art and some other fratures in seconds.
I'd suspect in the future, people will not pay for "AI art" as a stand-alone product. It will need to be part of a bundle with something else that is more scarce to make it valuable.