Key Concepts

Match each of the terms on the left with its definition on the right. Click on the term first and then click on the matching definition. As you match them correctly they will move to the bottom of the activity.

Question

monopoly
market power
barriers to entry
economies of scale
rent seeking
x-inefficiency
price discrimination
perfect (first-degree) price
second-degree price discrimination
third-degree price discrimination
natural monopoly
marginal cost pricing rule
average cost pricing rule
rate of return regulation
price caps
antitrust law
concentration ratio
Herfindahl-Hirschman index (HHI)
contestable markets
As a firm’s output increases, its LRATC tends to decline. This results from specialization of labor and management, and potentially a better use of capital and complementary production techniques
Permits product pricing that allows the firm to earn a normal return on capital invested in the firm
Resources expended to protect a monopoly position. These are used for such activities as lobbying, extending patents, and restricting the number of licenses permitted
Any obstacle that makes it more difficult for a firm to enter an industry, and includes control of a key resource, prohibitive fixed costs, and government protection
A way of measuring industry concentration, equal to the sum of the squares of market shares for all firms in the industry
An industry exhibiting large economies of scale such that the minimum efficient scale of operations is roughly equal to market demand
Charging different customers different prices based on the quantities of the product they purchase
Charging different consumer groups different prices for the same product
Requires a regulated monopolist to produce and sell output where price equals average total cost. This permits the regulated monopolist to earn a normal return on investment over the long term and therefore remain in business
Charging each customer the maximum price each is willing to pay, thereby expropriating all consumer surplus
Markets that look monopolistic but where entry costs are so low that the sheer threat of entry keeps prices low
Laws designed to maintain competition and prevent monopolies from developing
Maximum price at which a regulated firm can sell its product. They are often flexible enough to allow for changing cost conditions
The share of industry shipments or sales accounted for by the top four or eight firms
Protected from competitive pressures, monopolies do not have to act efficiently. Spending on corporate jets, travel, and other perks of business represents x-inefficiency
A firm’s ability to set prices for goods and services in a market
A one-firm industry with no close product substitutes and with substantial barriers to entry
Charging different groups of people different prices based on varying elasticities of demand
Regulators would prefer to have natural monopolists price where P = MC, but this would result in losses (long term) because ATC > MC. Thus, regulators often must use an average cost pricing rule
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