Firms often lobby for tariffs or quotas to provide relief...

Firms often lobby for tariffs or quotas to provide relief from import competition. a. Suppose that the monopolist shown in Figure $10-9$ has a foreign competitor that will supply output perfectly elastically at a price slightly above the monopolist's $A C=M C$ but below $P$. Show the impact of the foreign competitor's entry into the market. b. What would be the effect on the price and quantity if a prohibitive tariff were levied on the foreign good? (A prohibitive tariff is one that is so high as to effectively wall out all imports.) What would be the effect of a small tariff? Use your analysis to explain the statement, "The tariff is the mother of monopoly."

Firms often lobby for tariffs or quotas to provide relief from import competition.
a. Suppose that the monopolist shown in Figure $10-9$ has a foreign competitor that will supply output perfectly elastically at a price slightly above the monopolist's $A C=M C$ but below $P$. Show the impact of the foreign competitor's entry into the market.
b. What would be the effect on the price and quantity if a prohibitive tariff were levied on the foreign good? (A prohibitive tariff is one that is so high as to effectively wall out all imports.) What would be the effect of a small tariff? Use your analysis to explain the statement, "The tariff is the mother of monopoly."

Key Concepts

Prohibitive Tariffs and Protectionism

A prohibitive tariff is set at such a high level that it effectively prevents any competition from imported goods, allowing domestic monopolists to maintain or even increase their market power. This extreme form of protectionism can lead to higher prices and reduced market competition, thereby reinforcing the monopolist's control over the market.

Small Tariffs and Market Dynamics

Unlike prohibitive tariffs, small tariffs do not completely eliminate foreign competition but only partially raise the cost of imports. This can lead to a situation where the market experiences moderated competition with prices that are somewhat elevated compared to an entirely free market, potentially allowing some monopolistic pricing behavior while still benefiting from competitive pressures.

Tariffs

Tariffs are taxes imposed on imported goods designed to increase their cost relative to domestic products. They are used as a tool in trade policy to protect domestic industries from foreign competition by making imported goods less competitive on price.

Foreign Competition

Foreign competition involves firms from outside the domestic market entering to offer similar goods, typically at competitive and often lower prices. This entry challenges the monopoly by forcing adjustments in pricing and output, usually leading to lower prices and increased total market supply, ultimately benefiting consumers.

Monopoly and Market Power

A monopoly exists when a single firm dominates the market, allowing it to set prices above marginal cost and restrict output to maximize profits. In a monopoly, the absence of significant competition enables the firm to sustain higher profits at the expense of market efficiency and consumer surplus.

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