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Difficulty: HardMonopoly: Characteristics and Sources of Monopoly Power

An electricity distribution firm operates in a municipality where substantial initial infrastructural investment causes its long-run average cost to continuously decline over the entire range of market demand. Which of the following best explains the fundamental source of this firm's monopoly power?

  1. Substantial economies of scale that render single-firm production more cost-effective than multi-firm competition, establishing a natural monopolyAnswer
  2. B
    Exclusive statutory patent rights granted by the state government preventing rival firms from distributing electrical energy
  3. C
    Complete ownership and cartellized control over all strategic raw materials required for power generation
  4. D
    A perfectly price elastic demand curve that allows the firm to set price above marginal revenue without losing buyers

Answer

Substantial economies of scale that render single-firm production more cost-effective than multi-firm competition, establishing a natural monopoly.
The correct answer accurately points out that when long-run average cost declines over the entire extent of market demand, significant economies of scale enable a single firm to produce at a lower cost per unit than multiple firms, giving rise to a natural monopoly.

Step-by-Step Solution

1
Analyze the firm's cost structure provided in the scenario
The firm experiences continuously falling long-run average costs (LRAC) across the entire range of market demand due to massive overhead fixed costs.
This structural condition indicates that minimum efficient scale is large relative to market size.
2
Classify the specific origin of monopoly power
This cost dynamic defines a natural monopoly rooted in economies of scale.
Duplication of distribution networks by competing firms would raise average costs for all firms and split demand inefficiently.
3
Differentiate from alternative sources of monopoly power
Natural monopolies arise from technology and cost structures, distinguishing them from legal monopolies (patents/licenses) or key resource control.
Selecting the accurate economic rationale demonstrates mastery of monopoly origin classifications.

Key Concept

Natural Monopoly and Economies of Scale
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Topics

Monopoly: Characteristics and Sources of Monopoly Power

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