Market Structures
- The behaviour and performance of firms will depend upon which market structure they are thought to fit into
- The three main market structure are: monopoly, oligopoly and monopolistic competition
- Care has to be taken in defining the market, either in terms of products or geographically.
- g. there is more competition for the leisure industry on the whole than there is for cinemas.
- Economist look at certain key indicators to ascertain what market structure a firm is operating in, there are:
- Barriers to entry/exit
- Market concentration ratio
- Type of profits earned in the long run
- Behaviour of firms
- Performance of firms
Barriers to Entry and Exit
- A barrier to entry is an obstacle to new firms entering a market
- g. in the 1940s the barrier that stopped other firms broadcasting due to the legal monopoly was a legal one – the law stopped them
- Other barriers of entry include:
- High start-up costs
- Potential firms may have difficulty raising the finance, and be concerned about the risks involved
- Brand names
- Customers may be loyal to a specific brand, and hence reluctant to try new ones
- Economies of scale
- Established firms have lower costs of production, and so probably can afford to make a profit at a lower average revenue.
- Limit pricing
- Established firms may deliberately set their prices low to discourage new firms from entering the market.
- There are also barriers to exit, the three main ones being:
- Sunk costs
- These are costs that cannot be recovered should a firm leave the market
- Advertising expenditure
- Should a company have spent a lot on a long-term advertising contract, this money cannot be recovered
- Contracts
- A firm may be legally obliged to supply a product for a period of time
- Sometimes, awareness of barriers to exit act as barriers to entry, as a firm will be less likely to enter a market if they’re aware of the costs that could be incurred upon leaving it.
- Sunk costs
- High start-up costs
Monopoly
- In a Monopoly market, there are high barriers to entry.
- In 1932 to 1955, the BBC was a pure monopoly, because the firm was the industry.
- In a Monopoly the firm is a price maker
- A private sector monopolist is likely to want to maximise profit
- Profits are maximised where MR = MC
- In some markets, it can be more efficient to have just one firm, this is called a natural monopoly
- This is called a natural monopoly
This probably occurs due to the existence of economies of scale and the avoidance of wasteful duplication (e.g. water supply)
- As well as a pure monopoly, there exists a legal monopoly and a dominant monopoly
- The former refers to a firm that has a market share of 25% or more
- The latter refers to a firm with a 40% or more market share.
Oligopoly
- An oligopoly is a market with a high 3-5 firm market concentration ratio
- Such a market structure is dominated by a few large firms
- There are high barriers to entry and exit, which allow firms to earn supernormal profits in the long run
- The product that is produced is usually differentiated
- Firms are price makers
- There is a high level of non-price competition
- Firms often seek to attract customers by ways other than charging a lower price
- Firms are interdependent of each other
- In making decisions on things like advertising campaigns, firms will consider what their rivals will do
- Analysing the behaviour of firms operating under conditions of oligopoly is difficult, as firms may adopt a variety of strategies
- One strategy is to cut the price in order to gain a larger market share
- This would cause other firms to match the price cut, and so the original firm is likely to cut the prices again, as the original cut would become redundant
- This constant lowering of prices is called a price war, and is detrimental to all firms
- As a result, it is not a popular strategy, due to the high risk and its often lack of long-term benefits
- Firms may seek to reduce the risk of a price war by colluding with rivals, forming a cartel
- In such situations, the firms produce separately but sell at one agreed price.
- They are, in effect, acting as a monopoly
- Cartels are illegal in most countries, including the UK, but this doesn’t stop all firms acting in this way.
- In such situations, the firms produce separately but sell at one agreed price.
- In practise, as members of a cartel have an incentive to cheat, formal collusion tends to break down over time.
- Tacit collusion may occur, where firms follow the price strategy of a leading firm
- Game Theory plays an important part in oligopolists’s
- This is where a firm will strongly consider the reactions of other firms when making a decision, and base their decisions off of this hypothetical action
Monopolistic Competition
- This market structure has a high degree of competition between firms
- This produces a product that is similar but slightly different from that of its rivals (homogeneous product)
- It is characterised by a large number of small firms
- Low barriers to entry and exit
- Non-price competition
- Each firm faces a downward sloping demand curve, and is a price taker.
- The lack of barriers to entry and exit means that normal profit is earned in the long run
- In the short run, if market demand increases, incumbent firms will earn supernormal profit
- As a result, firms outside the market will be attracted by these high profits, and enter the market
- Subsequently, their entry will cause market the supply curve to shift to the right, driving down price until normal profit is earned again
- A monopolistically competitive firm will seek to increase demand by increasing customer loyalty, usually in the firm of making their products as distinctive as possible
- This could be through things like advertising, after-sales service, better location of outlets or improved quality.