> Whenever something becomes cheaper (in this case, labor for art), its consumption increases. So in the future, because producing commercial art is so much cheaper, it will be consumed a lot more.

I'm not sure how that would apply here. There's never been a shortage of art. Art has always had more supply than demand, and now we just added even more supply to saturate the market. I was previously a more likely client for an artist than I am now where I can get my computer to spit out any image I want in like 30 seconds. But I have no more desire for art than I did before.