Pearson Edexcel International GCSE Economics: Business competition (4EC1)

This guide covers section 1.2.4 (Business competition) of the Pearson Edexcel International GCSE Economics (4EC1) specification, Issue 3, February 2026. It sits in Paper 1, Microeconomics and Business Economics. There is a single tier of entry. Every country, firm and figure below is invented for illustration. Use it with the revision notes and the practice questions, then check progress on the course hub and the printable checklist. If you are unsure where to start, try the free 10-minute diagnostics.

What this section covers

Spec point	What you must be able to do
a	Give advantages and disadvantages of competition to firms, consumers and the economy: efficiency, choice, quality, innovation, price
b	Give advantages and disadvantages of large firms and small firms
c	Explain what influences growth: government regulation, access to finance, economies of scale, spreading risk, taking over competitors
d	Explain why firms stay small: size of market, niche market, lack of finance, aims of the entrepreneur
e, f	Define monopoly and describe its features, including barriers to entry
g	Give advantages and disadvantages of monopoly: efficiency, choice, quality, innovation, price, economies of scale
h, i	Define oligopoly and describe its features
j	Give advantages and disadvantages of oligopoly, including cartels and price wars

Competition (point a)

Competition exists when several firms try to win the same customers. The more firms, and the easier it is to switch between them, the stronger it is.

Heading	Advantage	Disadvantage
Efficiency	Rivals force firms to cut waste and keep costs low to survive	Firms may duplicate equipment and advertising, and small rivals may miss economies of scale
Choice	More sellers means more products and more places to buy	Too many similar products can confuse buyers
Quality	Firms improve products and service to keep customers	Some cut quality to keep prices low
Innovation	Firms invest in new ideas to get ahead	Profits are squeezed, so there may be less money for research
Price	Rivals hold prices down	Firms facing losses may close, leaving jobs lost and less competition later

Who gains? Consumers usually gain from lower prices, better quality and wider choice. Firms face lower profit and more risk, but efficient firms grow. The economy gains if lower costs and new products raise output and living standards, but lost jobs from closures are a cost.

Large firms and small firms (point b)

	Advantages	Disadvantages
Large firm	Economies of scale (lower average cost), easier access to finance, can spend on research and advertising, strong market power	Communication can be slow, workers may feel distant from managers, diseconomies of scale if too big, may reduce competition
Small firm	Quick decisions, personal service, flexible, owner closely involved	Higher unit costs, harder to borrow, less able to spread risk, limited buying power

Worked example: unit cost. A small bakery makes 2,000 loaves a month at a total cost of 3,000 units of currency. A large bakery makes 20,000 loaves at a total cost of 22,000. These figures are illustrative.

Small bakery: average cost = 3,000 / 2,000 = 1.50 per loaf
Large bakery: average cost = 22,000 / 20,000 = 1.10 per loaf
Fall = 1.50 - 1.10 = 0.40 -> 0.40 / 1.50 x 100 = 26.7%

The large bakery can sell below the small one’s cost and still make a profit. That is the main advantage of size.

What helps firms grow (point c)

• Access to finance. A firm can reinvest profits, borrow from a bank or sell shares. A firm that cannot raise money cannot buy machines or open new sites.
• Economies of scale. As output rises, average cost falls, so the firm can cut prices or earn more per unit. This rewards growth and makes further growth easier.
• Spreading risk. A firm selling one product in one town is hit hard if demand falls. Selling several products, or in several areas, spreads risk because a fall in one is offset by others.
• Taking over competitors. A takeover is quicker than growing from scratch. It removes a rival and adds customers.
• Government regulation. Rules can restrict growth, for example by blocking a takeover that would give a firm too much market power, or by adding costs that are heavy for small firms. Other rules, such as support for exporters, can help.

Worked example: market share. Total sales in a town’s bread market are 400,000 loaves a month. Firm A sells 180,000 and Firm B sells 60,000.

Market share = firm's sales / total market sales x 100
A: 180,000 / 400,000 x 100 = 45%
B:  60,000 / 400,000 x 100 = 15%
If A takes over B: (180,000 + 60,000) / 400,000 x 100 = 60%

A takeover that lifts A from 45% to 60% could worry a regulator, because A would gain much more control over the price.

Why firms stay small (point d)

• Size of market. A hairdresser in a village has few customers and cannot grow beyond the local population.
• Nature of the market, niche. A firm making handmade leather saddles serves a narrow group. Customers want a personal, specialised product, and mass production would spoil it.
• Lack of finance. A new firm with little capital, and perhaps no record of repaying loans, may find banks unwilling to lend.
• Aims of the entrepreneur. The owner may want a comfortable income, free time or control, not maximum profit. Some would rather avoid the stress of managing many staff.

Monopoly (points e, f, g)

Definition. A monopoly is a market in which one business dominates, so that it has a very large share of sales and little or no competition.

Feature	What it means
One business dominates	It controls most or all of supply
Unique product	Buyers cannot easily switch to a close substitute
Price-maker	The firm chooses its price instead of accepting the market price
Barriers to entry	Anything that stops rivals entering

Barriers to entry:

• Legal barriers. The law may give one firm the sole right to supply, or require licences.
• Patents. A patent gives the inventor the sole right to make an invention for a set period.
• Marketing budgets. An established firm spends heavily on advertising, so a newcomer would need to match it.
• Technology. The firm may own special machinery or know-how that rivals lack.
• High start-up costs. Building a factory, rail line or network costs so much that few can afford to enter.

	Advantages	Disadvantages
Efficiency	Large output gives economies of scale; no duplication	No rival pressure, so costs and waste can creep up
Choice	One standard product can be easier for buyers	Few or no alternatives
Quality	Profits can fund better quality	Little reason to improve if customers cannot leave
Innovation	Patent protection and high profits fund research	Without rivals there is less pressure to innovate
Price	Savings from scale may be passed on	Price-maker status allows higher prices
Economies of scale	Lower average cost at high output	Gains may be kept as profit

Worked example: a merger to monopoly. Five bus firms in Country A (illustrative) merge into one. Before, the fare was 4.00 and 50,000 trips a month were sold, at a unit cost of 3.60. After, the fare is 5.00, 42,000 trips are sold and the unit cost falls to 3.00 through economies of scale.

Revenue before = 4.00 x 50,000 = 200,000
Revenue after  = 5.00 x 42,000 = 210,000
Fare change = (5.00 - 4.00) / 4.00 x 100 = +25%
Trips change = (42,000 - 50,000) / 50,000 x 100 = -16%
Profit before (all five firms together) = (4.00 - 3.60) x 50,000 = 20,000
Profit after = (5.00 - 3.00) x 42,000 = 84,000

Evaluation: the firm gains, because profit rises from 20,000 to 84,000. Passengers lose, as they pay 25% more and 8,000 fewer trips are made. The firm’s cost saving is large, so if the regulator capped the fare below 5.00, both sides could gain. The result depends on whether savings are passed on.

Worked example: payback on a patent. A drug firm spends 600,000 on research and wins a patent. It earns a profit of 15 per pack on 8,000 packs a year, which is 120,000 a year. Payback is 600,000 / 120,000 = 5 years. Without the patent a rival could copy the drug and the profit would not be there to repay the research. The cost is that patients pay a higher price while the patent lasts.

Oligopoly (points h, i, j)

Definition. An oligopoly is a market in which a few large firms supply most of the output.

Features:

• Few firms. Only a handful supply most of the market.
• Large firms dominate. Smaller rivals exist, but the big firms set the pace.
• Different products. Brands differ in design, image or service.
• Barriers to entry. Costs of starting up, brand loyalty and advertising keep newcomers out.
• Collusion. Firms may agree on prices or output instead of competing. A group of firms doing so is a cartel.
• Non-price competition. Firms compete on advertising, branding, quality, after-sales service, loyalty schemes and packaging, because a price cut is easily copied.
• Price competition. Firms sometimes cut prices to win share, which can start a price war.

Worked example: cartel, cheating and price war. Three firms in Country B (illustrative) each have a unit cost of 5.

Situation	Price	Units each	Profit each
Normal rivalry	8	10,000	(8 - 5) x 10,000 = 30,000
Cartel holds	10	8,000	(10 - 5) x 8,000 = 40,000
One firm cheats at 9	9 (cheat); 10 (others)	12,000 (cheat); 6,000 each (others)	cheat 48,000; others 30,000
Price war	6	12,000	(6 - 5) x 12,000 = 12,000

• Under the cartel, the price rises 25% ((10 - 8) / 8) and total sales fall from 30,000 to 24,000, down 20%. Consumers lose.
• Each firm gains 10,000 more profit than in normal rivalry, so firms want to form a cartel.
• A firm that cheats earns 48,000, more than 40,000, so firms are tempted to break the deal. Once one does, the others may cut too, and a price war follows, leaving profit at 12,000 each.

	Advantages	Disadvantages
Choice	Differentiated brands give variety	Choice may be superficial
Quality	Non-price competition improves quality and service	Money may go on advertising instead
Innovation	Large profits fund research	Collusion removes pressure to innovate
Cartels	None for consumers	High fixed prices, which many governments make illegal
Price wars	Lower prices for consumers	May drive out smaller rivals; once rivals are gone, prices may rise

Common errors

• Writing “monopoly means one firm” without saying it dominates, or without linking features to barriers to entry.
• Listing barriers without explaining how each stops entry.
• Saying a price war is always good for consumers. Prices fall now, but losses can force closures.
• Confusing a cartel (an agreement) with a merger (firms joining).
• Dividing a percentage change by the result rather than the starting value.

Evaluating “monopoly is bad for consumers”

Chain of reasoning: no rivals, so the firm can raise price without losing customers, so consumers pay more and get less choice. But large output can bring lower unit cost, and patent profits can fund new products. Whether consumers lose depends on whether the saving is passed on, whether a regulator limits prices, and how long the barriers last. A judgement should name which factor decides.

Official syllabus

Pearson Edexcel International GCSE Economics (4EC1) specification, Issue 3, February 2026, published by Pearson Education Limited, section 1.2.4.