Effect of having only one firm on price, quality, choice, profit
Microeconomic Decision‑Makers – Types of Markets
Monopoly: One Firm, Big Power
Imagine a small town where there is only one pizza shop. Because no other shop exists, the pizza shop can decide how much to charge, what toppings to offer, and how many pizzas to bake. This is what economists call a monopoly – a market with a single firm that dominates the supply of a product or service.
What Happens When There Is Only One Firm?
- Price – The firm can set a higher price than in a competitive market because customers have no alternatives. Think of it as a “price‑setter” rather than a “price‑taker.”
- Quality – Quality can go either way. The firm might invest in better ingredients to attract customers, or it might cut corners because there is no competition to push it to improve.
- Choice – With only one firm, the range of products is limited. Customers can only buy what the firm offers.
- Profit – Monopolies can earn higher profits because they face less pressure from rivals. In the long run, they can keep prices above marginal cost, leading to excess profits.
Analogy: The “Only Teacher” in a Classroom
If a class has only one teacher, that teacher decides the lesson plan, the homework, and the grading style. Students have no choice but to accept it. Similarly, a monopoly sets the terms for consumers.
Key Economic Concepts in a Monopoly
- Barriers to Entry – High startup costs, exclusive access to resources, or legal restrictions prevent new firms from entering the market.
- Marginal Cost (MC) & Marginal Revenue (MR) – The monopoly maximises profit where MR = MC. This usually results in a lower quantity sold than in a competitive market.
- Deadweight Loss – The loss of total surplus (consumer + producer) that occurs because the monopoly produces less than the socially optimal quantity.
Exam Tip Box
Exam Tip: When answering “Explain the effects of a monopoly on price, quality, choice and profit,” remember to:
- Define a monopoly and mention barriers to entry.
- Explain how the firm can set a price above marginal cost.
- Discuss potential changes in quality and product variety.
- Show that profits are higher than in perfect competition.
Comparison Table: Monopoly vs. Perfect Competition
| Feature | Monopoly | Perfect Competition |
|---|---|---|
| Number of Firms | 1 | Many |
| Price Setting | Sets price (P > MC) | Price taker (P = MC) |
| Quantity Sold | Lower than optimal | Optimal (socially efficient) |
| Profit | Excess profit in long run | Zero economic profit in long run |
| Quality & Variety | Variable – depends on strategy | Limited by competition |
Real‑World Example: Cell Phone Networks
In many countries, there is only one major mobile network provider. Because of this, customers often face higher prices, fewer choices of plans, and sometimes slower service upgrades. The monopoly can earn large profits, but consumers may suffer from reduced competition.
Quick Recap
- Monopoly = one firm dominates.
- Higher price, possible lower quantity.
- Quality and choice may decline.
- Profits are higher, but society may lose overall welfare.
Ready for the Exam?
Use the barriers to entry and price‑setting concepts to structure your answers. Remember the key differences in price, quantity, quality, choice, and profit when comparing a monopoly to a perfectly competitive market. Good luck! 🚀
Revision
Log in to practice.