3.7. Types of markets
- Syllabus
- 0455–2027–2028
- Topic
- 3.7
- Level
- —
Learning objectives
3.7.1Competitive markets• characteristics, advantages and disadvantages of competitive markets• effect of having a high number of firms on price, quality, choice, profit Note: diagrams / perfect or imperfect competition theory are not required.3.7.2Monopoly markets• characteristics, advantages and disadvantages of monopoly markets• effect of having only one firm on price, quality, choice, profit Note: diagrams are not required.
Explain competitive markets
A competitive market has many firms offering alternatives and relatively low barriers to entry. Because consumers can switch and new firms can enter, each firm faces pressure to win sales rather than assume customers will stay.
| Outcome | Likely effect of many competing firms | Why it is not guaranteed |
|---|---|---|
| price | rivalry can push prices down | small firms may have higher average costs because they miss economies of scale |
| quality | firms may improve reliability, service and innovation to retain buyers | cost-cutting or low profit may weaken quality and research |
| choice | more sellers and product varieties usually widen choice | duplication or too many similar options may add little value |
| profit | each firm may receive a smaller market share and lower profit | efficiency, innovation or a larger total market can still raise a successful firm's profit |
Consumers often gain purchasing power, choice and responsiveness to demand. Firms may become more efficient and innovative, but can face advertising costs, uncertain sales, closure risk and less finance for investment. The effect depends on costs, product differences and how strongly buyers switch.
Competition does not mean every firm is small, every price is low or every profit disappears. State the mechanism and condition instead of treating the outcome as automatic; no market-structure diagram or perfect/imperfect competition theory is required.
Evaluate a monopoly market
A monopoly market has one firm supplying the market and no effective competitor. High barriers to entry protect that position, so the firm has market power: buyers have few alternatives and the firm has greater influence over price and supply.
| Outcome | Possible disadvantage of one firm | Possible advantage or qualification |
|---|---|---|
| price | weak rivalry may allow a higher price | economies of scale may lower average cost and could support a lower price |
| quality | limited switching can reduce pressure to improve | secure profit may finance research, innovation and better quality |
| choice | one supplier usually narrows consumer choice | a broad range from the same firm may remain, but supplier choice is still absent |
| profit | entry barriers can protect high long-run profit | profit is not certain if demand is weak or costs, inefficiency or diseconomies are high |
Consumers may benefit when scale lowers cost, profit funds research or a state-owned monopoly prioritises social welfare. They may lose when market power produces high prices, weak service or complacency. Judge whether lower costs and investment are actually passed on through price, quality or access.
Monopoly means one supplier in the relevant market, not simply a very large or profitable firm. It does not prove costs are low, profit is high or quality is poor; each conclusion needs its own causal evidence. Diagrams are not required.