" The more competitors perceive the prospect of dogged, bitter retaliation to the point of severely hurting everyone’s profits, the less likely they are of initiating the chain of events in the first place. This is analogous to the situation in which the robber says, “stick ’em up, I want your money,” and the deranged-looking victim says “If you take it, I will explode this bomb and kill us both! "

― Michael E. Porter , Competitive Strategy: Techniques for Analyzing Industries and Competitors