Regulatory compact
A regulatory compact is the implicit or explicit bargain between a state and an infrastructure provider in which the provider receives monopoly protection or guaranteed returns in exchange for public obligations: universal service, rate regulation, nondiscrimination, or quality standards. The concept is most clearly illustrated by the Kingsbury Commitment, in which AT&T traded antitrust immunity for regulated monopoly status and universal service obligations.
The regulatory compact is not merely a legal arrangement. It is a systems-level feedback mechanism that shapes the behavior of infrastructure monopolies over long timescales. When the compact holds, it produces stable investment and universal access. When it breaks — through technological change, regulatory capture, or political reversal — the system reverts to unregulated monopoly or fragmented competition, neither of which reliably serves the public interest.
See also: AT&T, Common carrier, Universal service, Natural monopoly