ESG: A Panacea for Market Power?

We study the equilibrium effects of the "S" dimension of ESG under imperfect competition. ESG policies are pledges made by firms that constrain managers to treat their stakeholders better than market conditions alone dictate. Moderate policies limit market power and prompt managers to be more competitive; aggressive polices backfire, both for adopting firms and intended beneficiaries. In contrast to the "shareholder primacy" paradigm, competition in ESG policies under the "stakeholder capitalism" paradigm is a panacea for market power, delivering the first-best outcome in equilibrium. We discuss drivers behind the recent rise in ESG, ESG-linked compensation, and disclosure practices.