I don't feel threatened by AI anything.
Not too long ago I tried out this starryAI website. The idea is that you enter some text -- my son told me to enter "Cat dressed up like James Bond" -- and the AI came up with this . . .
Gamewise, I even found text-adventure-like AI Dungeon to be ultimately disappointing. Sure, the ability to type in anything and have the AI move the plot forward based on your input is a very cool concept. But there were many times where the AI failed miserably -- like forgetting character's names two sentences later or suddenly mentioning a skyscraper in an ancient fantasy world.
And this is all besides the fact that AI Dungeon and similar programs cost a LOT to even keep running and you have to be online for them to work.
Like alicecomma implied , I don't even see AI being very good for concept art -- or concept story, for that matter.
Ultimately, human-created content is going to prevail.