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Competitive Forces, Globalisation and Market Structures for ACCA BT

Updated 11 October 2026 · Fact-checked

Market structures describe how competitive a market is, from perfect competition (many sellers, no pricing power) to monopoly (one seller, high pricing power), with oligopoly and monopolistic competition between. Globalisation widens markets and raises competition. To solve questions, count the sellers, check barriers to entry, then judge pricing power.

Understand Competitive Forces, Globalisation and Market Structures

A market structure describes how a market is organised. The key features are the number of sellers, whether products are alike, how easy it is to enter the market, and how much control a seller has over price. The more control a firm has, the less it behaves like a price taker.

There are four structures you must know. In perfect competition there are many small sellers, identical products, free entry and exit, and good information. Each firm is a price taker. In a monopoly there is one seller, high barriers to entry and strong pricing power. In an oligopoly a few large firms dominate. Their decisions depend on each other, so they often avoid price wars and compete on branding, quality and advertising. Collusion may happen but is usually illegal. In monopolistic competition there are many sellers with differentiated products, such as restaurants or hairdressers. Entry is fairly easy, and each firm has some limited pricing power.

Barriers to entry protect existing firms. Examples are economies of scale, high capital costs, patents and licences, strong brands, control of supply, and government regulation. High barriers mean less competition and more pricing power.

Globalisation is the growing integration of world markets for goods, services, capital and labour. For a business it opens new markets and cheaper sourcing and production. It also brings foreign rivals, exchange rate risk, and cultural and legal differences. It pushes firms to cut costs, standardise or adapt products, and compete on quality or brand. Technology, falling transport costs and trade agreements drive it.

Competition affects strategy. Firms in competitive markets focus on cost control and efficiency. Firms with market power can set higher prices, but they may attract regulators who aim to protect consumers.

Key formulas to remember

Perfect competition features: Many sellers + identical products + free entry and exit + full information = price takers; Firms accept the market price. Real examples are rare, so agricultural markets are only a rough guide.
Monopoly features: One seller + high barriers to entry = price maker; A pure monopoly is one seller. Regulators often treat a large market share as a sign of monopoly power.
Oligopoly features: Few large firms + interdependence + barriers to entry; Firms watch rivals' moves. Non-price competition is common.
Monopolistic competition features: Many sellers + differentiated products + low barriers; Branding and differentiation give some pricing power.
Concentration ratio: Concentration ratio = combined market share of the largest n firms; A high ratio suggests an oligopoly or monopoly. Always state which n is used, such as the top 3 or top 5.

How to solve Competitive Forces, Globalisation and Market Structures questions

Use this method for scenario questions that ask you to identify a market structure or explain its effects.

1Read the scenario and underline the number of sellers mentioned.
2Check whether products are identical, differentiated or unique.
3Look for barriers to entry such as patents, scale, brands or licences.
4Decide how much control the firm has over price.
5Match the evidence to the structure that fits best.
6If the question concerns globalisation, list the effects on the firm: markets, costs, competitors and risks.
7Link your answer to strategy or pricing, such as price taking, non-price competition or regulatory risk.
8Check your choice against the other options and remove any that contradict the facts.

Quickest way: Sellers, products, barriers

When to use it: Use it for multiple choice questions that name a market and ask for its structure.

Ask: how many sellers? One means monopoly, a few means oligopoly, many means one of the other two.
If many, ask: identical or differentiated products? Identical means perfect competition, differentiated means monopolistic competition.
Confirm with barriers: high barriers rule out perfect and monopolistic competition.
Pick the option that matches all three clues, not just one.

Common mistakes in Competitive Forces, Globalisation and Market Structures

Treating monopoly and oligopoly as the same.
Both involve strong firms and high barriers, so they look alike.
Fix: Count the sellers. One seller is a monopoly. A few interdependent large sellers are an oligopoly.
Saying firms in oligopoly always compete on price.
Students assume more competition means price cuts.
Fix: Remember that price wars hurt every firm, so oligopolists often use branding, quality and advertising instead.
Calling any branded-product market a monopoly.
A brand feels unique, so students think the firm is the only seller.
Fix: If many firms sell similar but differentiated products, it is monopolistic competition.
Thinking globalisation only helps businesses.
Textbook lists often start with new markets and cheap production.
Fix: Give both sides: new markets and lower costs, but also more rivals, exchange rate risk and cultural differences.
Assuming perfect competition is common in the real world.
It is taught first, so it seems typical.
Fix: Treat it as a theoretical benchmark. Use it to compare, not to describe most real markets.

Worked examples

Example 1

A country's mobile network market has three large operators holding a combined 90% of customers. Starting a new network needs huge investment in licences and masts. The operators rarely cut prices but spend heavily on advertising and bundled offers. Which market structure is this, and why?

Show the solution

Number of sellers: three large firms, so a few dominate.
Barriers to entry: licences and heavy capital costs are high barriers.
Behaviour: no price cuts and heavy non-price competition shows interdependence.
These features match an oligopoly. It is not a monopoly because there is more than one seller.

Answer: Oligopoly. A few large firms with high barriers compete mainly on non-price factors.

Example 2

A domestic clothing manufacturer faces new overseas competitors after its country joins a free trade agreement. Explain two effects of globalisation on the firm and one strategic response.

Show the solution

Effect 1: more competition. Overseas rivals with lower costs can undercut prices, which reduces the firm's market share and margins.
Effect 2: new opportunities. The agreement lowers trade barriers, so the firm can sell into partner countries and source cheaper materials.
Response: the firm could cut costs through efficiency or focus on a differentiated, higher-quality brand to reduce price competition.
Link: this choice depends on whether the firm can match overseas costs.

Answer: Globalisation increases competition and opens new markets. The firm could cut costs or differentiate its products to compete.

Exam tips

In objective tests, find the number of sellers first. It often removes two options straight away.
Watch for keywords: 'price taker' signals perfect competition, 'interdependent' signals oligopoly, 'differentiated' signals monopolistic competition.
For multiple response questions, select exactly the number asked. Check each statement against the structure separately.
In Section B tasks, tie the market structure to a business choice such as pricing, advertising or regulatory risk.

Practice questions from Competitive factors

Competitive Forces, Globalisation and Market Structures: frequently asked questions

What is the difference between monopoly and oligopoly?

A monopoly has one seller that dominates the market. An oligopoly has a few large sellers whose decisions affect each other. Both have high barriers to entry.

Why do oligopolies avoid price wars?

A price cut by one firm is likely to be copied by rivals, so all firms earn lower profits. They tend to compete on quality, branding and advertising instead.

How does globalisation affect competition?

It brings foreign competitors into domestic markets and lets firms enter new countries. This usually raises pressure on prices and pushes firms to improve efficiency or differentiate.

Is perfect competition realistic?

Rarely. It is a theoretical model that needs identical products, free entry and full information. Some markets, such as certain agricultural goods, come close.