I agree that the uncertainty over whether works are actually copyrighted is a major concern, and one that I wish we could fix independent of the issue of copyri

I agree that the uncertainty over whether works are actually copyrighted is a major concern, and one that I wish we could fix independent of the issue of copyright duration. However, concentration of valuable IP in the hands of the few is also a problem. Limited duration copyright provides the greatest benefit to individual authors (by maximizing their bargaining power while limiting the bargaining power of IP-hoarders through erosion) and the public domain.