Lecture 3 - Monopoly Flashcards
What is a monopoly?
The only supplier of a good for which there is no close substitute.
Monopolies are not price takers like…
Competitive firms.
Monopoly output is the…
Market output.
Monopoly demand curve is the…
Market demand curve.
Monopolists can set their own…
Price given market demand.
Because demand is downward sloping, monopolists set price above…
Marginal cost to maximise profit.
Like all firms, monopolies maximise profits by…
Setting price or output so that marginal revenue (MR) equals marginal cost (MC).
What does the slope of the demand curve represent?
The change of the quantity due to unit change of the price.
With a downward sloping demand curve, if we increase price, what will happen to quantity demanded?
It will decrease.
With a downward sloping demand curve, if we decrease price, what will happen to quantity demanded?
It will increase.
What is elasticity?
The percentage change of the quantity demanded due to one percent change of the price.
What is market power?
The ability of a firm to charge a price above marginal cost and earn a positive profit.
Monopoly has market power. Which firms do not?
Competitive firms do not.
What is the Lerner Index (or price markup)?
Another way to examine the way in which elasticity affects a monopoly’s price relative to its MC.
Elasticity of the market demand curve depends on…
Consumers’ tastes and options.
When does demand become more elastic, implying less market power for the firm?
- As better substitutes for the firm’s product are introduced.
- As more firms enter the market selling a similar product.
- As firms that provide the same service locate closer to the firm
As a profit maximising monopoly faces more elastic demand, it has to…
Lower its price.
Fill in the blanks - Competition maximises _, which is the sum of _ and _ , because _ equals _.
Competition maximises welfare, which is the sum of consumer surplus and producer surplus, because price equals marginal cost.
By contrast, in a monopoly…
- Price does not equal marginal cost.
- Marginal revenue lies below the demand curve.
A monopoly sets price…
Above marginal cost (and above the competitive price).
A monopoly causes consumers to buy…
Less than the competitive level of output.
A monopoly generates…
Deadweight loss. This is one of the reasons governments are trying to prevent long term periods of monopoly power.
What are the two reasons some markets are monopolised?
- Cost advantage over other firms.
- Government created monopoly.
What are the cost advantages of monopoly?
- Control of an essential facility, a scarce resource that a rival firm needs to use to survive.
Example: owning the only quarry in a region generates a cost advantage in the production of gravel. - Use of superior technology or a better way of organising production.
Example: Henry Ford’s assembly lines and standardisation. - Protection from imitation through patents or informational secrets.
- Secrets are more common in new and improved processes; patents are more common with new products. - Natural monopoly.
- A market has a natural monopoly if one firm can produce the total output of the market at lower cost than several firms could.
Examples: public utilities such as water, gas, electric, and mail delivery.
- Natural monopolies may have high fixed costs, but low and fairly constant marginal costs.
