Why would I want to spend years developing my own art style if I know that it can be copied and used by one of these AI engines in a few hours? Are we going to end up with less human created artwork?
Artistic expression is, I would say, an inherent feature of the human brain. It is also a consequence of the available tools. Even if I grant that people are simply going to stop drawing and painting (which I find highly unlikely), what would happen in that instance is that new techniques will arise to harness these new tools in novel ways. "Okay, I can get the computer to more or less generate anything I want. How can I compose and combine this tool into giving me something unique and interesting?"
