This paper reexamines the welfare economics of risk. It singles out a class of criteria, the “expected equally distributed equivalent,” as the unique class that avoids serious drawbacks of existing approaches. Such criteria behave like ex post criteria when the final statistical distribution of well-being is known ex ante and like ex ante criteria when risk generates no inequality. The paper also provides a new result on the tension between inequality aversion and respect of individual ex ante preferences, in the vein of Harsanyi’s aggregation theorem.

The stakeholder (or responsible) firm maximizes the (weighted or unweighted) sum of the surpluses of its customers and suppliers (including workers). Although this objective is hard to empirically measure, it can be pursued by simple management rules that rely on constrained profit maximization. Unconstrained profit maximization gives a competitive edge to ordinary firms, but stakeholder firms are better for social welfare and internalize several important effects of their activities on society. Long-term entry decisions should rely on profit modified by Pigouvian pricing of externalities, and this result provides a novel justification for the polluter-pays principle.