Overview
This lecture covers market failures in competitive markets, focusing on public goods, externalities, the Tragedy of the Commons, and government interventions to address these issues.
Market Failures & Incentives
- Market failures occur when free markets do not allocate resources efficiently or fairly.
- Individual incentives can conflict with collective interests, leading to suboptimal outcomes.
- The free rider problem arises when individuals benefit without contributing, reducing the provision of essential services.
Public Goods
- Public goods have two key features: non-exclusion (cannot prevent non-payers from using) and non-rivalry (one person's use does not diminish others').
- Examples include national defense, fire protection, and public parks.
- Government often funds public goods through taxes as private markets may underprovide them.
Tragedy of the Commons
- The Tragedy of the Commons describes overuse and depletion of shared resources due to individual incentives.
- Examples: overfishing, deforestation, and depletion of animal populations.
- Environmental economics focuses on addressing these issues.
Externalities
- Externalities are costs or benefits affecting third parties outside a transaction.
- Negative externalities (e.g., pollution) harm others; positive externalities (e.g., education) benefit society.
- Markets often overlook externalities, resulting in overproduction or underproduction of certain goods.
Government Solutions: Regulation & Market-Based Policies
- Regulatory policies set rules or bans to limit negative externalities or promote positive ones (e.g., pollution limits, compulsory education).
- Market-based policies use taxes (to reduce negatives) or subsidies (to encourage positives) to influence behavior.
- Taxes on cigarettes and carbon emissions help internalize external costs.
Cap and Trade & Global Challenges
- Cap and trade systems limit total pollution by issuing permits that can be traded among companies.
- Successful examples include programs reducing acid rain in the US.
- Global issues like climate change require international cooperation, as countries have incentives to pollute for economic gain.
Key Terms & Definitions
- Market Failure — when free markets do not efficiently allocate resources.
- Free Rider Problem — individuals who benefit from resources without paying.
- Public Good — a good that is non-excludable and non-rivalrous.
- Tragedy of the Commons — overuse of shared resources due to individual incentives.
- Externality — a side effect of an action that impacts others (positive or negative).
- Regulatory Policy — government rules to directly control behaviors.
- Market-Based Policy — use of economic incentives to alter market outcomes.
- Cap and Trade — a system where pollution permits are allocated and can be traded.
Action Items / Next Steps
- Review definitions and examples of public goods, externalities, and the Tragedy of the Commons.
- Prepare for discussion on government intervention methods and effectiveness.
- (If assigned) Read additional materials on environmental economics and cap and trade systems.