What are the major reasons for market failure ? Explain the role of the government in this context.
Market failure occurs when free markets fail to allocate resources efficiently, leading to sub-optimal outcomes for society. Major reasons include:
- Externalities: Costs or benefits imposed on third parties not involved in a transaction (e.g., pollution as a negative externality, vaccination as a positive one).
- Public Goods: Goods that are non-rivalrous (one person's consumption doesn't diminish another's) and non-excludable (difficult to prevent people from consuming them even if they don't pay), leading to the "free-rider" problem (e.g., national defense).
- Asymmetric Information: When one party in a transaction has more or better information than the other, leading to inefficient outcomes (e.g., used car market).
- Monopolies/Market Power: A single firm or a few firms dominating a market can restrict output and raise prices above competitive levels.
Government's role is to correct these failures. It uses taxes or subsidies to internalize externalities, provides public goods directly, regulates industries, enforces information disclosure, and implements antitrust laws to prevent monopolies, aiming to improve resource allocation and social welfare.
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