The Tragedy of the Commons
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What Is The Tragedy of the Commons?
The tragedy of the commons is the tendency for a resource open to everyone, such as a fishery, pasture, or forest, to be overused and depleted because each individual user gains the full benefit of taking more while bearing only a small share of the resulting cost. Acting in their own interest, users collectively exhaust the resource. The problem was long taken to imply that only privatization or top-down state control could protect shared resources. Elinor Ostrom challenged that conclusion. Through field research gathered in Governing the Commons (1990), she showed that communities can and do govern shared resources sustainably through their own rules, without either private ownership or outside authority.
Why It Matters
The tragedy of the commons is one of the most influential ideas in environmental and resource economics, framing debates over fisheries, grazing land, groundwater, pollution, and the global climate. Its logic explains why resources no one owns tend to be degraded. Elinor Ostrom's work is celebrated for showing that the grim outcome is not inevitable: she documented durable, self-organized arrangements, from irrigation systems to communal forests, in which users craft and enforce their own rules. In 2009 she became the first woman to win the economics prize, sharing it for her analysis of economic governance of the commons. Her findings reshaped how policymakers think about managing shared resources.