Final answer:
The question discusses a hypothetical cartel scenario between two milk sellers in an oligopoly, analyzing the difference in outcomes when they collude versus when they compete. A cartel typically leads to higher prices and profits by restricting output, akin to a monopoly. In contrast, intense competition after the cartel's dissolution leads to lower prices, higher output, and potentially no profits.
Step-by-step explanation:
The question is about two firms forming a cartel within an oligopolistic market structure and analyzing their pricing, output, and profit strategies. By colluding, the firms are acting like a monopoly, making collective decisions to maximize profits.
a. Cartel Outcomes
If the firms form a cartel, they will attempt to act like a monopoly by setting the quantity where marginal revenue (MR) equals marginal cost (MC). They will then charge a price on the demand curve just above that quantity. If we assume zero fixed costs and a horizontal MC curve (implying that average cost equals MC), the cartel's profits will be positive and are graphically equal to the area of the rectangle formed by the monopoly quantity and the difference between monopoly price and average cost.
b. Cutthroat Competition Outcomes
In a scenario where the cartel breaks up and intense price competition ensues, the firms would compete by lowering prices and increasing output, likely leading to an industry output higher than the monopoly quantity at a lower price. The collective profits of all firms in this scenario are reduced, potentially to zero.
c. Comparison of Equilibrium Outcomes
Comparing the cartel and cutthroat competition outcomes, we can see that the cartel can set higher prices and earn larger profits by restricting output compared to the situation where firms compete aggressively on price, where market quantity increases, price decreases, and profits diminish.