Market Failure | UGC NET Economics – Notes

Introduction

Market failure refers to a situation in which the allocation of goods and services by a free market is not Pareto efficient, leading to a net loss of economic welfare relative to what would be achievable under idealised competitive conditions. The First Welfare Theorem establishes that competitive markets achieve efficient allocation only under a specific set of assumptions — perfect information, well-defined property rights, absence of externalities, and the absence of public goods and market power. Environmental resources systematically violate these assumptions, making environmental market failure one of the most pervasive and consequential categories of market failure studied in economics. The consequence of environmental market failure is that private markets, left uncorrected, generate outcomes in which the marginal social cost (MSC) of resource use or pollution diverges from the marginal private cost (MPC), leading to systematic over-production of pollution-intensive goods and under-provision of environmental quality.

Sources of Market Failure

Economic theory identifies several distinct sources of market failure relevant to the environment: externalities, public goods, common property resources, information asymmetry, and imperfect competition. Each of these sources operates through a different mechanism but shares the common feature that decentralised private decision-making, guided solely by price signals, fails to reflect the true social costs and benefits of resource use.