Market Failure

Market Failure Definition: Where the market mechanism fails to allocate resources efficiently Social Efficiency Allocative Efficiency Technical Efficiency Productive Efficiency

Market Failure Social Efficiency = where external costs and benefits are accounted for Allocative Efficiency = resources cannot be readjusted to make one consumer better off without making another worse off – zero opportunity cost! P = MC Technical Efficiency = production of goods and services using the minimum amount of resources Productive Efficiency = production of goods and services at lowest factor cost

Market Failure Market Failure occurs where: Knowledge is not perfect – ignorance There is resource immobility There is monopoly power Services/goods would or could not be provided in sufficient quantity by the market External costs and benefits exist Inequality exists

Market Failure Imperfect Knowledge: Consumers do not have adequate technical knowledge Advertising can mislead or mis-inform Producers unaware of all opportunities Producers cannot accurately measure productivity Decisions often based on past experience rather than future knowledge

Market Failure Resource Immobility Factors are not fully mobile Labour immobility – geographical and occupational Capital immobility – what else can we use the Gautrain for? Land – cannot be moved to where it might be needed, e.g. Orange River to Lainsburg

Market Failure Monopoly power Produces less than the social optimum Deadweight loss under monopoly

A monopolist producing less than the social optimum MC R AR MR P1 Q1 MC1 O Q Monopoly output

A monopolist producing less than the social optimum MC = MSC P1 P2 = MSB = MSC MC1 AR = MSB MR O Q1 Q2 Q Monopoly output Perfectly competitive output

Market Failure Monopoly power The demand curve under monopoly production at less than the social optimum Deadweight loss under monopoly consumer and producer surplus consumer surplus

Market Failure Monopoly power The demand curve under monopoly production at less than the social optimum Deadweight loss under monopoly consumer and producer surplus consumer surplus producer surplus

Market Failure Monopoly power The demand curve under monopoly production at less than the social optimum Deadweight loss under monopoly consumer and producer surplus consumer surplus producer surplus total surplus

Deadweight loss under monopoly MC (= S under perfect competition) Consumer surplus a Ppc Qpc Producer surplus AR = D O Q (a) Industry equilibrium under perfect competition

Market Failure Monopoly power The demand curve under monopoly production at less than the social optimum Deadweight loss under monopoly consumer and producer surplus consumer surplus producer surplus total surplus the effect of monopoly on total surplus

Deadweight loss under monopoly MC (= S under perfect competition) MR Deadweight welfare loss Consumer surplus b Pm Qpc a Ppc Producer surplus AR = D O Qpc Q (b) Industry equilibrium under monopoly

Deadweight loss under monopoly MC (= S under perfect competition) Perfect competition Consumer surplus a Ppc Qpc Producer surplus AR = D O Q (a) Industry equilibrium under perfect competition

Deadweight loss under monopoly MC (= S under perfect competition) Monopoly MR Deadweight welfare loss Consumer surplus b Pm Qm a Ppc Producer surplus AR = D O Qpc Q (b) Industry equilibrium under monopoly

Market Failure Monopoly power The demand curve under monopoly production at less than the social optimum Deadweight loss under monopoly consumer and producer surplus consumer surplus producer surplus total surplus the effect of monopoly on total surplus Other problems with monopoly

Market Failure Monopoly power The demand curve under monopoly production at less than the social optimum Deadweight loss under monopoly consumer and producer surplus consumer surplus producer surplus total surplus the effect of monopoly on total surplus Other problems with monopoly Possible advantages from monopoly

Market Failure Inadequate Provision: Merit Goods and Public Goods Merit Goods – Could be provided by the market but consumers may not be able to afford or feel the need to purchase – market would not provide them in the quantities society needs Sports facilities?

Market Failure Merit Goods Education – nurseries, schools, colleges, universities – could all be provided by the market but would everyone be able to afford them? Schools: Would you pay if the state did not provide them?

Market Failure Public Goods Markets would not provide such goods and services at all! Non-excludability – Person paying for the benefit cannot prevent anyone else from also benefiting - the ‘free rider’ problem Non-rivalry – Large external benefits relative to cost – socially desirable but not profitable to supply! A non-excludable good? Would you pay for this?

Market Failure De-Merit Goods Goods which society over-produces Goods and services provided by the market which are not in our best interests! Tobacco and alcohol Drugs Gambling

Market Failure External Costs and Benefits External costs The cost of an economic decision to a third party External benefits The benefits to a third party as a result of a decision by another party

Market Failure External Costs Decision makers do not take into account the cost imposed on society and others as a result of their decision e.g. pollution, traffic congestion, environmental degradation, depletion of the ozone layer, misuse of alcohol, tobacco, anti-social behaviour, drug abuse, poor housing

External Costs Price Value of the negative externality (Welfare Loss) MSC = MPC + External Cost Price The Marginal Social Benefit curve (MSB) represents the sum of the benefits to consumers in society as a whole – the private and social benefits. The Marginal Private Cost (MPC) curve represents the costs to suppliers of producing a given output. The true cost therefore is the MSC (the MPC plus the external cost). Current output levels therefore (100) represent some element of market failure – price does not accurately reflect the true cost of production. The MPC does not take into account the cost to society of production. At an output level of 100, the private cost to the supplier is £5 per unit but the cost to society is higher than this (£12). The difference between the value of the MSB and the MSC represents the welfare loss to society of 100 units being produced. MPC £12 Value of the negative externality (Welfare Loss) Social Cost £7 £5 Socially efficient output is where MSC = MSB The slide has been designed to try to lead students through the distinction between the private costs of production and the social cost. The diagram starts out with a basic supply and demand position with price at £5 and Quantity at 100. The demand curve has been labelled MSB – a brief explanation of the concept here is useful. The supply curve is the marginal private cost – the cost to the producer. To try to link the theory to the practice it is suggested that the item in question is the production of rolls of Clingfilm! The reason is that in producing cellophane products there is an amount of air pollution. If students are told that the cost to the producer of manufacturing 100 rolls of Clingfilm is £5 (don’t forget to remind them that this figure includes the element of profit they make) but, the company do not take into consideration the cost imposed on society of the pollution they cause. This cost is then highlighted by a dashed line moving up from the bottom and is priced at £12 . The supply curve that considers the true cost (the MPC and MSC) is then drawn in and the right brace appears to indicate the extent of the social cost (£7). The welfare loss triangle is then imposed – this may need to be explained and students could be reminded of the work done on consumer surplus to help reinforce the concept of the ‘value’ here. Finally, the socially efficient output is highlighted; students can be told that there would be benefits to society if less were produced but that we would be paying more as a result! MSB 80 100 Quantity Bought and Sold

Market Failure External benefits by products of production and decision making that raise the welfare of a third party e.g. education and training, public transport, health education and preventative medicine, refuse collection, investment in housing maintenance, law and order

External Benefits Price MSC Value of the positive There can be a position where output is less than would be socially desirable (education for example?) In this case, the sum of the benefits to society is greater than the private benefit to the individual. MSC Value of the positive externality (Welfare Loss) £10 Social Benefits £6.50 Socially efficient output is where MSC = MSB £5 This slide looks at MSB MPB 100 140 Quantity Bought and Sold

Market Failure Inequality: Poverty – absolute and relative Distribution of factor ownership Distribution of income Wealth distribution Discrimination Housing

Market Failure Measures to correct market failure State provision Extension of property rights Taxation Subsidies Regulation Prohibition Positive discrimination Redistribution of income