Monopoly vs Oligopoly
Monopoly and Oligopoly are two Market Structures concepts in AP Economics that students often mix up. In short: monopoly is a monopoly is a market structure with a single seller producing a unique product with no close substitutes and significant barriers to entry. Meanwhile, oligopoly is an oligopoly is a market structure dominated by a small number of large interdependent firms. Here is how they compare side by side.
A monopoly is a market structure with a single seller producing a unique product with no close substitutes and significant barriers to entry.
A monopolist is the sole provider of a good or service and faces the entire market demand curve, allowing it to set price above marginal cost. Because of high barriers to entry, other firms cannot enter the market to compete.
An oligopoly is a market structure dominated by a small number of large interdependent firms.
Firms in an oligopoly are mutually aware of each other’s actions and often engage in strategic behavior, such as price leadership or collusion. High barriers to entry limit competition and can lead to sustained economic profits.
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