ECON 1000 Lecture Notes - Lecture 13: Monopoly Price, Marginal Revenue, Natural Monopoly

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27 Sep 2017

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Monopoly is a market: produces good or service with no close substitute exists, one supplier is protected from competition by a barrier preventing the entry of new firms. If there is a close substitute, then the firm faces competition from producers of the substitute: monopoly sells a good that has no close substitutes. Barriers to entry: constraint that protects a firm from potential competitors, 3 types of barriers. 10% unit: economies of scale is always achieved, lrac is sloping downward when it meets the demand curve. Ownership barriers to entry: occurs if one firm owns a significant portion of a key resource. Legal barriers to entry: creates legal monopoly, competition and entry are restricted by the granting of a, public franchise, government license, patent or copyright. Monopoly price-setting strategies: single-price monopoly: must sell each unit of its output for the same price to all its customers, price discrimination: selling different units of a good or service for different prices.

Related Questions

When the demand for a good or service limits the quantity that can be sold to an output at which the firm experiences economies of scale, the ____.

A) firm is a single-price monopoly

B) good that the industry produces has close substitutes

C) firm is a natural monopoly

D) firms are protected from competition by a legal barrier

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1.As long as price is sufficient to cover __________, the firm isbetter off by operating rather than by shutting down in the shortrun.
Answer
marginal cost
average fixed cost
average variable cost
marginal revenue

2.The owner of Tie-Dyed T-shirts, a perfectly competitive firm, hashired you to give him some economic advise. He has told you thatthe market price for his shirts is $20 and that he is currentlyproducing 200 shirts at an AVC of $15 in the short run and an AC of$25. What would you recommend to him?
Answer
To continue producing in the short run, as his loss from productionis less than his fixed costs, but to exit the industry in the longrun if there are no changes in economic conditions.
To shut down in the short run, as he is incurring a loss and toleave the industry in the long run, if there are no changes ineconomic conditions.
To continue to produce in the short run, even though he is earninga loss, and to expand in the future with the hope of increasingmarket share and total revenue.
You tell him you cannot make any recommendations until you knowwhat his fixed costs are.

3.Which type of barrier to entry allows the electric company tomaintain a monopoly over the production of electricity?
Answer
a patent
economies of scale
diseconomies of scale
ownership of a scarce factor of production.

4. Why can a monopolist continue to make positive profits even inthe long-run while a perfectly competitive firm can make only zeroeconomic profits in the long-run?
Answer
Because a monopoly only has one firm while perfect competition hasmany.
Because monopoly has barriers to entry and perfect competition hasfree entry.
Because perfect competition has barriers to entry and monopoly hasfree entry.
Because in perfect competition everyone produces the same productand because in monopoly there are no close substitutes.

5.What is the difference between diminishing returns anddiseconomies of scale?
Answer
Diminishing returns is in the short run while diseconomies of scaleis in the long run.
Diminishing returns is in the long run while diseconomies of scaleis in the short run.
They are both the same thing.
There is no such thing as diseconomies of scale.

6. What does the LAC look like for a firm with constant returns toscale?
Answer
It slopes downwards.
It slopes upwards.
It is a horizontal straight line.
It is a vertical straight line.

7.Natural monopoly occurs when there are:
Answer
large economies of scale.
firms joining together to limit output and raise prices.
different prices for different consumers or groups ofconsumers.
patents.

8.Suppose we know that a monopolist is maximizing its profits.Which of the following must be true? The monopolist has
Answer
maximized its total revenue.
set price equal to its average cost.
maximized the difference between marginal revenue and marginalcost.
set marginal revenue equal to marginal cost.

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Discuss until July 15, 2018. After the deadline, this link will close.

1. Suppose a firm is operating in a competitive market and is maximizing profit by producing at the point where marginal revenue equals marginal cost. Now suppose that consumer wealth decreases in this market (and the good is a normal good). What might you expect to happen to the profit-maximizing output quantity for the firm?

2. In what ways are profit-maximizing and loss-minimizing the same? In what ways are they different?

3. Suppose that De Beers and the local water utility are both monopolists, in the markets for diamond jewelry and water, respectively. If both monopolies decided to raise prices 15 percent, which monopoly would be more likely to see its total revenue decrease? Why?

4. Until the 1980s, AT&T held a monopoly over the national market for phone services. Suppose that AT&T argued that it was a natural monopoly, because the fixed cost of creating a nationwide phone network generated huge economies of scale, and that there was therefore no welfare loss associated with its monopoly. Counter this argument by explaining how even a natural monopoly causes deadweight loss.

5. Explain why an oligopolist (with few competitors) pays more attention to what its competitors are doing than a producer in a competitive market (with many competitors) does.

6. Given that the market for smartphones is inefficient, explain why consumers of smartphones might not want the price to be regulated.

ECON 1000 Lecture Notes - Lecture 13: Monopoly Price, Marginal Revenue, Natural Monopoly

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