Recording devices permitted artists to sell more art.
Many of the uses of AI people get most excited about seem to be cutting the expensive human creators out of the equation.
Current AI can greatly elevate what a beginning artist can produce. If you have a decent grasp of proportions, perspective and good ideas, but aren't great at drawing, then using AI can be a huge quality improvement.
On the other hand if you're a top expert that draws quickly and efficiently it's quite possible that AI can't do very much for you in a lot of cases, at least not without a lot of hand tuning like training it on your own work first.