Regulatory capture is a form of political corruption that occurs when a regulatory agency, created to act in the public interest, instead advances the commercial or special concerns of interest groups that dominate the industry or sector it is charged with regulating. Regulatory capture is a form of government failure; it creates an opening for firms to behave in ways injurious to the public (e.g., producing negative externalities). The agencies are called “captured agencies”.
…regulatory capture occurs because groups or individuals with a high-stakes interest in the outcome of policy or regulatory decisions can be expected to focus their resources and energies in attempting to gain the policy outcomes they prefer, while members of the public, each with only a tiny individual stake in the outcome, will ignore it altogether. Regulatory capture refers to when this imbalance of focused resources devoted to a particular policy outcome is successful at “capturing” influence with the staff or commission members of the regulatory agency, so that the preferred policy outcomes of the special interest are implemented.
— The Economic Theory of Regulation, 1971 by George Stigler (1911- 1991)
Photograph: Stigler, Milton Friedman, John Kenneth Galbraith (l to r)