Evaluating regulation and its alternatives

Overview

Effect of a price cap on prices, regulators require firms to publish clear and comparable price information and claim that regulation is only ever a second-best solution.

What you need to know

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Questions from this subtopic

Each one with the model answer underneath.

1. 1

   Analyse the effect of a price cap on prices, output, employment and economic welfare.

   Model answer

   Price falls to the capped level and, provided the cap is above marginal cost at the resulting output, the quantity supplied rises, so consumers gain both from paying less and from consuming more. Employment in the industry may rise with output, but the pressure to meet the cap by cutting costs works the other way and often produces job losses in operations and administration. Economic welfare rises because output moves towards the point where price equals marginal cost, removing part of the deadweight loss, and in the worked case a cap at £55 raised total welfare by £112.50. Against this, if the cap is set below the cost of the marginal unit a shortage appears, and if it is set so tight that investment is deterred, future capacity and quality suffer.

2. 2

   Why might regulation be preferred to breaking up a firm in a network industry?

   Model answer

   Because the industry is a natural monopoly, so splitting the network would duplicate expensive infrastructure and raise unit costs for everyone without creating meaningful competition. Regulation leaves the cost advantage of the single network intact and attacks only the pricing that the monopoly position permits, which is the source of the harm.

3. 3

   Evaluate the effectiveness of price controls as a method of intervention in an uncompetitive market.

   Model answer

   Their strength is directness. A cap delivers a lower price immediately and with certainty, it does not depend on entry ever occurring, and in the worked example it converted a £112.50 deadweight loss into a gain shared between consumers and society. It is also cheap compared with restructuring an industry. The weaknesses are serious. The regulator must estimate the right level using information the firm controls, and it will always know less than the firm. A cap set too low produces shortages, as at £50 where demand of 25 units met supply of 20. A cap invites the firm to reduce quality instead, so quality rules must accompany it. It can deter the investment that future consumers depend on. And it must be policed indefinitely, with the risk of capture growing over time. Price controls are therefore well suited to a genuine natural monopoly where competition is impossible, and a poor substitute for opening a market to entry where entry is feasible.

4. 4

   Why do regulators require firms to publish clear and comparable price information?

   Model answer

   Competition works only if customers can see which offer is cheaper. Where tariffs are complex, bundled or expressed in different units, buyers cannot compare them and stay with their existing supplier even when better offers exist, which allows prices to remain high. Requiring a standard, comparable presentation is a cheap intervention that makes the market work better without controlling any price directly.

5. 5

   Explain how requiring easy switching between suppliers can substitute for controlling prices.

   Model answer

   If a customer can move supplier in a few days with no penalty, a firm that raises its price loses volume quickly, so the discipline comes from the market rather than from a rule. This avoids the regulator having to estimate the correct price, preserves the firm's incentive to cut costs, and adjusts automatically as conditions change. It works only where genuine alternative suppliers exist, so it complements rather than replaces regulation of the network itself.

6. 6

   Why does regulation impose costs on the firms regulated and ultimately on consumers?

   Model answer

   Complying with a regulator absorbs real resources: reporting data, running price reviews, employing specialists and lawyers, and delaying decisions while approval is obtained. The regulator itself must be funded. These costs are part of the industry's cost base and are recovered in prices, so they must be set against the benefits of intervention rather than ignored, and they explain why a lighter remedy is preferable where one would work.

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