Clark D. Asay has self-archived "A Case for the Public Domain" in SSRN.
Here's an excerpt:
Over the past several decades open license movements have proven highly successful in the software and content worlds. . . . This Article argues that this IP-based approach, while perhaps helpful in the beginning, is no longer necessary and in fact prevents the movements from reaching their full potential. The IP-based approach has this effect by causing significant transaction costs without offsetting benefits, resulting in a tragedy of the anti-commons. The IP-based approach also creates the risk of IP trolls in the future, especially in the copyright sphere. . . . The Article then examines the benefits of a public domain approach and argues that such an approach would reduce the wasteful transaction costs, limit the possibility of IP trolls, still satisfy the purposes of those that contribute materials under open licenses, and better align with the normative tenets of such movements. To conclude, the Article assesses the merits of a "Public Domain Act" that would help address obstacles that currently exist in dedicating materials to the public domain and posits some theoretical implications relating to innovation based on the experiences of the open license movements and the arguments of this Article.