[1.2.4b] Monopoly
Monopoly
A monopoly exists when a single firm dominates a market, supplying a product with no close substitutes. In practice, a firm is often considered dominant when it holds a large market share — in the UK the competition regulator uses 25% as a threshold. Because the monopolist is the only supplier, it faces the entire market demand curve and can influence price by controlling output.
Main Features of Monopoly
- One business dominates: the monopolist is the sole or overwhelmingly dominant supplier.
- Unique product: no close substitute exists, so consumers have no alternative.
- Price-maker: unlike a competitive firm that must accept the market price, the monopolist sets its own price by restricting output. It chooses a point on the demand curve, trading higher price against lower quantity sold.
Barriers to entry prevent new firms from entering and competing, sustaining monopoly power.
- Legal barriers: government licences or exclusive franchises legally restrict entry. Utility companies often receive exclusive regional franchises.
- Patents: grant exclusive production rights for up to 20 years. Pharmaceutical firms routinely patent new drugs, securing temporary monopoly power.
- Marketing budgets: massive advertising by incumbents makes it prohibitively expensive for new entrants to build equivalent brand recognition.
- Technology: proprietary processes or know-how that rivals cannot replicate. Operating system dominance (e.g. Windows) is a classic example.
- High start-up costs: industries requiring enormous capital (railways, water pipes, electricity grids) create natural monopolies — no entrant would duplicate an existing network.
Advantages and Disadvantages of Monopoly
| Dimension | Advantage | Disadvantage |
|---|---|---|
| Price | Large scale economies may allow lower average costs that a smaller competitor could not achieve. | Without competition, the monopolist typically charges above the competitive price, exploiting pricing power. |
| Efficiency | Large scale allows productive efficiency — operation at minimum average cost. | No competitive pressure means no incentive to minimise costs — X-inefficiency (waste and slack) may develop. |
| Choice | A diversified monopolist may still offer some product variety. | A single supplier reduces consumer choice — no alternatives if consumers dislike the offering. |
| Quality | Reputation concerns may motivate quality maintenance to protect long-run revenue. | Without rivals to lose customers to, the monopolist faces no pressure to improve quality. |
| Innovation | High profits fund significant R&D. Patents incentivise innovation by guaranteeing a return on investment. | With market position secure, the monopolist may become complacent and innovate less than rivals would. |
| Economies of scale | Dominant market share enables substantial economies of scale, lowering average costs. | If cost savings are not passed to consumers, economies of scale benefit the firm rather than buyers. |
Key Takeaways
- A monopoly is a market dominated by one firm supplying a unique product with no close substitutes.
- The monopolist is a price-maker — it restricts output to charge above the competitive price.
- Barriers to entry (legal, patents, marketing, technology, high start-up costs) protect the position.
- Monopoly can deliver economies of scale and fund R&D, but typically raises prices, reduces choice and quality, and removes the incentive to be efficient.