What is the problem with oligopoly?
John Thompson
Published Feb 19, 2026
The economic and legal concern is that an oligopoly can block new entrants, slow innovation, and increase prices, all of which harm consumers. Firms in an oligopoly set prices, whether collectively—in a cartel—or under the leadership of one firm, rather than taking prices from the market.
How can oligopoly cause market failure?
In an oligopoly, no single firm enjoys a) or a single large seller (monopoly). The sellers may collude to set higher prices to maximize their returns. The sellers may also control the quantity of goods produced in the market and may collude to create scarcity and increase the prices of commodities.
Why is it difficult for oligopoly firms to cooperate?
Betrayal is the dominant strategy for both players in the game. Betrayal leads to best individual outcome regardless of what the other person does. Cooperation by firms in oligopolies is difficult to achieve because defection is in the best interest of each individual firm.
Why are oligopolies inefficient?
Hence, oligopolies exhibit the same inefficiencies as a monopoly. Because the marginal cost curve intersects the marginal revenue curve before it intersects the average total cost curve, oligopolies never reach an efficient scale of production efficiency, since they never operate at their minimum average total cost.
Is Apple an oligopoly?
Big Tech. Operating systems for smartphones and computers provide excellent examples of oligopolies in big tech. Apple iOS and Google Android dominate smartphone operating systems, while computer operating systems are overshadowed by Apple and Microsoft Windows.
How do you break an oligopoly?
One important strategy for regulating an oligopoly is for the government to break it up into many smaller companies that will then compete with each other. In the 19th century, cartels were called trusts — for example, the Sugar Trust, the Steel Trust, the Railroad Trust, and so on.
Is oligopoly Allocatively efficient?
Societal efficiency is low in oligopoly in general. They are not allocative efficient because they do not produce at MC=AR, since they are price takers, they producer at MC=MR instead to maximise profits. Producers are also productively inefficient because they do not produce at the minimum AC where MC=AC.
Is Amazon a oligopoly?
Amazon.com is an example of an oligopoly. In an oligopoly, there are a few sellers that dominate an industry. Rather than there being a market with many firms that each own a small share of the market, Amazon and eBay dominate e-commerce sales.
How do you calculate profit in oligopoly?
The oligopolist maximizes profits by equating marginal revenue with marginal cost, which results in an equilibrium output of Q units and an equilibrium price of P. The oligopolist faces a kinked‐demand curve because of competition from other oligopolists in the market.
When should a firm shut down?
A shutdown point is typically a short-run position; however, in the long run, the firm should shut down and leave the industry if its product price is less than its average total cost. Therefore, there are two shutdown points for a firm – in the short run and the long run.
