The class is theory of price regulation assumed that the regulator knows the fIrm's costs, the key piece of information that enables regulators to pressure fmns to choose appropriate behaviors. The "regulatory problem" was reduced to a mere pricing problem: the regulator's goal was to align price with marginal cost, subject to the constraint that revenues must cover costs. Elegant and important insights ensued. The most important was that regulation was inevitably a struggle to achieve second-best outcomes. (Ramsey pricing was a splendid example. ) Reality proved harsh to regulatory theory....

The class is theory of price regulation assumed that the regulator knows the fIrm's costs, the key piece of information that enables regulators to pressure fmns to choose appropriate behaviors. The "regulatory problem" was reduced to a mere pricing problem: the regulator's goal was to align price with marginal cost, subject to the constraint that revenues must cover costs. Elegant and important insights ensued. The most important was that regulation was inevitably a struggle to achieve second-best outcomes. (Ramsey pricing was a splendid example. ) Reality proved harsh to regulatory theory....