a. Market Failure and Public Goods

• Market Failure: Market failure occurs when the allocation of resources by a free market is inefficient. This inefficiency is often due to externalities, public goods, imperfect knowledge, and immobility of resources, which prevent markets from reaching optimal outcomes.
• Public Goods: Public goods are goods that are non-rivalrous (one person’s use does not reduce availability to others) and non-excludable (no one can be excluded from using them). Examples include national defense, street lighting, and public parks.

b. Conclusions on Government Intervention in Nigeria

1. Inefficient Market Structure: Nigeria’s economy is characterized by market imperfections that do not guarantee optimal social allocation. Government intervention is often required to address these imperfections and ensure equitable resource distribution.
2. Externalities: Public goods, such as environmental protections or education, generate externalities not accounted for by the market. Positive spillovers from these goods, like improved health or education, justify government provision.
3. Income Distribution: Market-driven income distribution tends to be unequal, especially in developing economies like Nigeria. Government intervention can help bridge income gaps through taxation and social programs.
4. Public Goods Requirement: The market may not provide essential goods and services, particularly those benefiting society at large. For instance, infrastructure, healthcare, and security services are typically underprovided without government support.
5. Addressing Negative Externalities: Negative externalities, such as pollution or noise, often arise without regulation. Governmental controls are necessary to mitigate these issues and promote a healthier environment.