Perfect Competition vs Monopolistic Competition
Perfect Competition and Monopolistic Competition 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, monopolistic competition is monopolistic competition is a market structure with many firms selling differentiated products and facing low barriers to entry. 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.
Monopolistic competition is a market structure with many firms selling differentiated products and facing low barriers to entry.
Firms in monopolistic competition have some pricing power due to product differentiation but face competition from many rivals. In the long run, they earn zero economic profit as new firms enter when profits are positive.
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