3.4.5 Monopoly Flashcards
What market share is needed for a monopoly?
25% or more
Market share
The proportion of total revenue a firm controls in a particular market.
What is a natural monopoly?
A market with only one firm in it. The firm has (close to) 100% market share.
Give an example of industries with a natural monopoly
Railways: Network Rail.
Water: United Utilities.
Why do natural monopolies exist?
It is more efficient for one firm to operate in a market.
Competition would decrease efficiency.
E.g. Competition in water industry would mean water companies would have to lay seperate pipes.
E.g. Competition in the railway industry would mean new tracks would have to be laid.
Are monopolies price makers?
Yes - firms can influence the price of a particular good on their own.
Why does monopoly power happen?
- High barriers to entry.
- Advertising and product differentiation.
- Few competitors in the market.
How do high barriers to entry cause monopoly power?
They prevent new competition entering a market to compete away large profits.
How does advertising and product differentiation cause monopoly power?
A firm may be able to act as a price maker if consumers think of its products as more desirable than those produced by other firms.
Example: Apple
How does a lack of competition cause monopoly power?
If a market is dominated by a small number of firms, these are likely to have some price-making power. They’ll also find it easier to differentiate their products.
What determines demand in a monopoly market?
Price - the higher the price, the lower the demand will be.
Do monopolies make supernormal profits?
Short term - Yes
Long term - Yes (because profits aren’t competed away - due to high barriers of entry).
Are monopolies productively efficient?
No - monopolies don’t operate at the lowest point on the AC curve.
Are monopolies allocatively efficient?
No - the price charged by the firm is greater than Marginal Cost. (Producers are being over-rewarded for the products they’re providing).
What leads to natural monopolies?
If an industry has high fixed costs and/or large economies of scale.
What does the government do to ensure that consumers are not charged higher monopoly prices.
Regulation - often in the form of maximum prices.
Why might a government be reluctant to break up a natural monopoly?
It could reduce efficiency.
Benefits of monopolies
- They can exploit economies of scale (allowing them to keep AC - and therefore prices - low).
- The security a monopolist has in the maret can lead to dynamic efficiency and innovation.
- Increased financial security means that a monopolist can provide stable employment for its workers.
Drawbacks of monopolies
- There is no need for a monoply to innovate or respond to changing consumer preferences in order to make a profit, so they become complacent.
- There is no need to increase efficiency, so x-inefficiency can remain high.
- Consumer choice is restricted, since there are no alternative products.
- A monopsonist power can be used to exploit suppliers.
Price discrimination
This when a seller charges different prices to different customers for exactly the same product.
What must the products be for price discrimination to happen?
The products must be exactly the same.
For example, Economy vs Business plane tickets are not an example of price discrimination because it costs more to provide a business class seat.
What does price discrimination do to consumer surplus?
A consumer surplus is the difference between the actual selling price of a product and the price a consumer would be willing to pay. For example, if the price of a cinema ticket was £7 but a consumer would have been willing to pay £10, then the consumer surplus is £2.
Price discrimination attempts to turn consumer surplus into additional revenue for the seller.
Conditions for price discrimination
- The seller must have price making power (monopoly/oligopoly).
- The firm must be able to distinguish seperate groups of customers who have different PED. - The more groups that the market can be subdivided into, the greater the gains for the seller.
- The firm must be able to prevent seepage - it must be able to prevent customers who have bought the product at a low price re-selling it themselves at a higher prices to customers who could have been charged more.
Examples of price discrimination
- Theatres and cinemas offer ‘concession’ prices for certain groups (e.g. students and pensioners).
- Window cleaners could charge more in a smart neighbourhood than in a lower-income area.
- Train tickets at rush hour cost more than the same train ticket at other times of the day.
- Pharmaceutical drugs may be sold at different prices in different countries.
