This is what I said though. A game's failures can be blamed on bad AI. But once you reach the point of okay AI, you stop hearing about it. There's very little reason to put in whatever effort is required to make your AI great, because the only people who will take notice are hardcore players who put in tons of hours. And that's nice and all, but the game costs $60 whether you play it for 10 hours or 100. So why spend millions on a feature that's hard to make a trailer for, and is only noticeable to your most hardcore fans?