Defecting in a prisoners dilemma scenario is not necessarily unethical or greedy. Suppose you run a business and your main competitor proposes that you both for

Defecting in a prisoners dilemma scenario is not necessarily unethical or greedy. Suppose you run a business and your main competitor proposes that you both form a cartel and raise your prices. This has the same payoff matrix as the conventional prisoners dilemma, but the "right" move is to defect.