This is absolutely right: Strategies are situational as well as species-dependent. There are times when the ant colony's strategy breaks down, such as when it invades my back porch and I call the exterminator.

As humans our overriding goal is to use our big brains to switch strategies when needed -- but not to switch too often lest we go insane trying to follow all the good advice on the Internet at once. Nobody said it was easy.