R. Anthony Reese has self-archived "What Copyright Owes the Future" in SSRN.
Here's an excerpt:
This Lecture explores the subject of preserving copyrighted works for the future in four steps. First, I look at why preserving creative works is important and valuable. Next, I examine the ways in which copyright law has traditionally encouraged—or not encouraged—the preservation of copyrighted works. Third, I explore how digital technology and computer networks, such as the Internet, pose new challenges for preserving creative works. And finally, I consider briefly how we might rethink and revise copyright law to respond to the challenges of preserving works of authorship for future audiences.