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Competition and Market Power

Contestability, ease of entry and barriers to entry

  • 3 things to know
  • Papers 1 and 3

Overview

Contestable markets and the threat of entry, sunk costs, hit-and-run entry, the internet and retailing, barriers to entry from product differentiation, branding and start-up costs, intellectual property and UK patents, pharmaceutical firms, and how research and technological change can raise or lower barriers.

What you need to know

Answer each one before you reveal it.

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Key term

What is a contestable market?

Key term

Why does the threat of entry, rather than actual entry, discipline prices?

Key term

What is a sunk cost, and why does it matter for contestability?

Questions from this subtopic

Each one with the model answer underneath.

  1. 1

    What is a contestable market?

    Model answer

    A contestable market is one where entry and exit are cheap and easy, so existing firms are disciplined by the threat of new competition.

  2. 2

    Why does the threat of entry, rather than actual entry, discipline prices?

    Model answer

    Firms hold prices near cost because high profits would immediately attract entrants who could take their customers away.

  3. 3

    What is a sunk cost, and why does it matter for contestability?

    Model answer

    A sunk cost cannot be recovered on leaving a market, and the larger it is the riskier entry becomes and the less contestable the market is.

  4. 4

    What is hit-and-run entry?

    Model answer

    Hit-and-run entry is where a firm enters to capture short-term supernormal profit and leaves again once it disappears, which is only possible when exit is costless.

  5. 5

    How has the internet increased the contestability of retailing?

    Model answer

    An online seller avoids the sunk cost of shops and can reach customers nationally, so far less capital is needed to enter.

  6. 6

    State what is meant by a barrier to entry.

    Model answer

    A barrier to entry is anything that makes it harder or more expensive for a new firm to start competing in a market.

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