If a breach of contract is both material and opportunistic, the injured promisee has a claim in restitution to the profit realized by the defaulting promisor as a result of the breach. Liability in restitution with disgorgement of profit is an alternative to liability for contract damages measured by injury to the promisee.

Commentators have described section 39's adoption as the equivalent of a "quiet revolution" that "is breathtaking in its potential transformation of the traditional contractual landscape." Caprice L. Roberts,Restitutionary Disgorgementas a Moral Compass for Breach of Contract, 77 U. Cin. L. Rev 991, 993 (2009).What is so revolutionary about this provision?

Article 39 of the Restatement (Third) of Restitution reads as follows:

Provisions in the Restatement are not legally binding unless and until they are adopted in a particular jurisdiction.Why would one not encourage the jurisdiction to adopt section 39?