No game has delivered something as complex as what people are asking for here. It is far more complex than people think to be truly adaptive, that's why psychic DB is more likely to happen then true adaptive AI. The defenses, and each players roles, are actually pretty complex and letting players inside that defense freely adapt will cause issues to other players in the defense who are also trying to adapt. That means that each adaptive AI player must be able to live within an eco system of other adaptive AI players all trying to work to stop a human who doesn't have to worry about the constructs of pre defined defense logic as offense tends to be more "free". What happens when one player's adaptation would hurt another's? Who takes precedent?
Again, not saying it is impossible but it really is a pretty complex thing to build.