Chapter 13: Monopoly

The core tension in oligopolistic markets emerges from the conflict between competitive and cooperative behavior: firms may achieve higher profits through collusion and coordination, yet individual incentives often push them toward price competition that reduces overall profitability. The prisoners' dilemma framework illuminates this fundamental problem, demonstrating why rational self-interested firms frequently fail to sustain mutually beneficial cooperative arrangements. The kinked demand curve model explains observed price rigidity in oligopolistic industries by showing that firms face asymmetric incentives around their current price point, fearing customer losses from price increases while gaining little from cuts. Game theory provides essential analytical tools for understanding oligopolistic outcomes, including concepts like dominant strategy and Nash equilibrium, which predict that firms may reach stable but collectively suboptimal positions. The chapter explores how firms attempt to sustain cooperation through tacit collusion, whereby coordination occurs without explicit agreement, and how repeated interactions can encourage cooperative behavior by creating incentives for long-term mutual benefit. Antitrust legislation and regulatory frameworks serve to detect and prevent collusion while promoting competitive outcomes. Real-world applications illustrate these principles across industries ranging from petroleum production controlled by OPEC to technological competition among major manufacturers, demonstrating how strategic decision-making fundamentally shapes market prices, output levels, and the pace of innovation in concentrated industries.