All with a stake or interest in the case against Microsoft, brought by the Justice Department and several state Attorneys General, should recognize the importance of the potential costs of this action, some of them not at all obvious. Regardless of the legal niceties or even some of the...

Classical approaches to the law, even statutory law, teach that its purpose is to codify behavioral rules creating clear expectations about the consequences of human interactions. Stability and predictability are the rule of law’s hallmarks. The present essay explores those principles within...

Dominant or apparently dominant internet platform increasingly become subject to both antitrust investigations and further-reaching political calls for regulation. While Google is currently in the focus of the discussion, the next candidate is already on the horizon - the ubiquitous online...

The 1945 McCarran-Ferguson Act provides that federal legislation generally, including the antitrust laws, is “applicable to the business of insurance [only] to the extent that such business is not regulated by State law.” The statute was enacted after United States v. South Eastern...

This article, published in 1987, responds to John Shepard Wiley, A Capture Theory of Antitrust Federalism, 99 Harv. L. Rev. 713 (1986). In an earlier article, I argued that the "clear articulation" requirement is the best criterion for "state action" antitrust immunity because it reinforces...

Corporate leniency programs promise putative offenders reduced punishment and fewer regulatory interventions in exchange for the corporation's credible and authentic commitment to remedy wrongdoing and promptly self-report future violations of law to the requisite authorities. Because these...

Modern antitrust and competition law relies extensively on the firm as defined by Ronald Coase: a hierarchy reducing transaction costs thanks to vertical control, where such control defines the firm's boundaries. Meanwhile, the governance of public permissionless blockchains is horizontal....

Personal data is one of the key inputs for competition in many industries and its importance is even higher in data-driven markets, such as online platforms. Data protection regulations by regulating the use of personal data also enable its commercialisation; therefore they can be regarded as...

Antitrust law is undergoing a transformation that is detrimental to the interest of the general public. “Romantics” are taking over antitrust law—a fact evinced by recent public outreach instruments. This transformation is grounded in populist rhetoric that pits the “elites” (often,...