Perfect Competition vs Oligopoly
Perfect Competition and Oligopoly are two Market Structures concepts in AP Economics that students often mix up. In short: perfect competition is perfect competition is a market structure with many small firms, identical products, free entry and exit, and perfect information. 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.
Perfect competition is a market structure with many small firms, identical products, free entry and exit, and perfect information.
Firms in perfect competition are price takers and face a perfectly elastic demand curve. In the long run, economic profit is zero due to free entry and exit, leading to allocative and productive efficiency.
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.
Get AP Econ exam tips in your inbox
Occasional emails with study tips, new interactive graphs, and exam-season reminders. Free — no spam.
No spam. Unsubscribe anytime.