Nicolo Zingales has published "Digital Copyright, 'Fair Access' and the Problem of DRM Misuse" in the Intellectual Property & Technology Forum & Journal at Boston College Law School.
Here's an excerpt:
This article points out one of the ways the development of these new technologies has altered the boundaries of copyright, specifically by enabling copyright holders to strategically expand the scope of protection through the strategic use of Digital Rights Management (hereinafter, DRM). After a brief overview of these technologies and their contribution to the development of online markets for copyrighted works, the article discusses the risks of using DRM as a means of stretching the legal protection conferred by Intellectual Property law.
As a potential solution to such problem, the article looks at the role of the courts and the approach embraced vis a vis specific cases of abuse of DRM in the copyright context. . . . The article then concludes recommending a two-fold approach to the assessment of the legality of such practices, where antitrust analysis and IP principles are intermingled, proposing a legal test to facilitate this complex assessment.