Quote Originally Posted by LordHugh
Mainly because the mass-market seems to be more interested in games looking great instead of playing great. CA also have the problem of having to balance the game so people new to it or people with very little knowledge of tactics (which I'm betting is the vast majority) won't be completely over-run by the AI. Unfortunately this means the game is less challenging and often more frustrating for the more seasoned players who expect AI improvements in every new iteration of the game.

That's what difficulty settings are for. So this is no reason to not improve the AI. Without substantial AI improvements this game is not even worth buying.