Economics · 5th Year · The Firm and Market Structures · 3.º Período

Imperfect Competition and Oligopoly

Analysis of real-world market structures, including monopolistic competition and oligopoly, highlighting non-price competition and interdependence.

TL;DR:Most real-world businesses fall into the categories of Imperfect Competition or Oligopoly. This topic explores how firms like supermarkets, banks, and tech giants actually operate. Students investigate monopolistic competition, where many firms sell similar but differentiated products (like hair salons or restaurants), and oligopoly, where a few large firms dominate and are highly interdependent.

• NCCA Curriculum Specifications
• NCCA Economics LO 2.13
• NCCA Economics LO 2.14

About This Topic

Most real-world businesses fall into the categories of Imperfect Competition or Oligopoly. This topic explores how firms like supermarkets, banks, and tech giants actually operate. Students investigate monopolistic competition, where many firms sell similar but differentiated products (like hair salons or restaurants), and oligopoly, where a few large firms dominate and are highly interdependent.

A major focus is non-price competition, such as branding, advertising, and loyalty schemes. Students also examine the risks of collusion and the role of the Competition and Consumer Protection Commission (CCPC) in Ireland. This topic benefits from collaborative investigations into real Irish market shares and the 'branding wars' students see in their daily lives.

Key Questions

1. What characterises an oligopolistic market?
2. How do firms use non-price competition?
3. What is the impact of collusion on consumers?

Watch Out for These Misconceptions

Common Misconception

Oligopolies always collude to keep prices high.

What to Teach Instead

While possible, collusion is illegal and often unstable because firms have an incentive to 'cheat' for more market share. Using game theory simulations helps students see why firms often end up in price wars instead.

Common Misconception

Monopolistic competition is the same as a monopoly.

What to Teach Instead

The 'monopolistic' part only refers to brand loyalty; the 'competition' part means there are many rivals. Sorting local businesses into these categories helps students distinguish between the two.

Active Learning Ideas

Inquiry Circle

The Supermarket Wars

Groups research the market share of Tesco, Dunnes, SuperValu, Aldi, and Lidl in Ireland. They identify how these firms compete using things other than price (e.g., vouchers, quality, Irish-sourced labels).

45 min·Small Groups

Simulation Game

The Oligopoly Game

Small groups represent mobile networks. They must secretly decide to 'raise prices' or 'keep prices low.' If they all raise, they profit; if one 'cheats' and lowers, they steal the market. This demonstrates interdependence.

40 min·Small Groups

Think-Pair-Share

Branding Power

Students choose two similar products (e.g., Nike vs. generic runners). They discuss why one can charge more and how 'product differentiation' creates a mini-monopoly for the brand.

15 min·Pairs

Frequently Asked Questions

What is an oligopoly?

A market structure dominated by a small number of large firms who are interdependent, meaning the actions of one firm significantly affect the others.

How can active learning help students understand non-price competition?

By having students analyze real marketing campaigns or design their own 'brand differentiation' strategy for a generic product, they see how firms avoid price wars by creating perceived value in the consumer's mind.

What is the role of the CCPC in Ireland?

The Competition and Consumer Protection Commission ensures that markets work well for consumers by enforcing competition law and preventing illegal practices like cartels or price-fixing.

Why do firms in an oligopoly often have 'sticky' prices?

Firms fear that if they raise prices, no one will follow, and if they lower prices, everyone will follow, leading to a price war where everyone loses.