In a VentureBeat article I argue that most fundamental game designs were made at a point in time were many AI algorithms were not invented, and the computers of the time were too weak to run those algorithms that existed. Therefore games were designed not to need AI.
Nowadays, we have much more sophisticated AI methods and better computers to run them. However, game design has not kept up. Our games are still designed not to need AI, probably because our game designs are evolutions of the same old designs. This is why many game developers argue that their games don't need AI.
We need to go beyond this, and redesign games with AI capabilities in mind. Perhaps design the games around the AI. There are some more examples from academia here.
Of course, this argument applies to many other things than games. Perhaps most things we do.