ECON 001B Chapter Notes - Chapter 16: Breakfast Cereal, Monopolistic Competition, Moe Williams

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12 May 2020
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Perf competition many sellers, identical product. Monop comp is similar to perf comp, both have: Generic vs. name-brand -> same product/different packaging. Like a monopolist, the monop comp firm faces a downward sloping demand curve for its product. It cannot sell a large quantity without charging a lower price. A monop comp firm will choose to produce a quantity such that marginal revenue = marginal cost. Short-run: as we saw with perf comp, in the short run a monopolistically comp firm will choose to stay in the market as long as price (p) > average. Eg: firm has a fixed cost of ,000/mo. At mr=mc, q=100 => afc=30, avc=70, p=80. If the firm decides to shut down. Costs 1,000 more to shut down than to produce. Stay in business as long as avc is less than price. Recall monop. comp. mkts have free entry+exit. Sr profits => free entry, drives profits to zero.

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