A monopolistically competitive has some degree of market power because:

Question

BlackTom AI · Accepted Answer

Product differentiation gives each firm some ability to raise price without losing all customers because consumers view products as distinct rather than perfect substitutes. 1. Relevant concepts - Monopolistic competition: many firms, free entry and exit, and product differentiation. - Market power: the ability to set price above marginal cost (P > MC) because the firm faces a downward‑sloping demand for its specific product. - Elasticity and substitutes: having close substitutes makes demand more elastic, limiting but not eliminating market power. 2. Step‑by‑step reasoning - In monopolistic competition, each firm produces a differentiated product (different branding, features, quality, etc.). This differentiation means the firm’s demand curve slopes downward: if it raises price, quantity demanded falls, but not to zero because some consumers prefer or value that firm’s product. - To maximize profit the firm sets output where marginal revenue (MR) = marginal cost (MC). Because the demand curve is downward sloping, MR < price, so the profit‑maximizing price exceeds MC (P > MC). That gap is the manifestation of the firm’s market power. - However, because substitute products exist, demand is relatively elastic: large price increases lead consumers to switch. Thus market power is limited (not as strong as a monopoly). 3. Calculations/intermediate steps - No numeric calculation is needed. The key intermediate logical steps are: product differentiation → downward‑sloping demand → MR < P and MR = MC → P > MC, which shows market power exists but is limited by substitutes. 4. Why the correct answer is correct - “Their goods produced are differentiated even though there are substitutes” precisely captures the source of limited market power in monopolistic competition: differentiation creates a unique demand for each firm’s product while substitutes cap that power. 5. Why other options are incorrect - Homogeneous goods and perfect substitutes describes perfect competition (no market power). - Perfectly elastic demand is the perfect competition case (firms are price takers). - “No close substitutes” would describe a monopoly or highly concentrated market, not monopolistic competition. Conclusion: The correct answer is “their goods produced are differentiated even though there are substitutes,” matching the provided answer.

A monopolistically competitive has some degree of market power because:单项选择题

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