Thanks to William Stepp at Against Monopoly for finding the quote below from John Perry Barlow. This quote was written in 1994!
"The greatest constraint on your future liberties may come not from government but from corporate legal departments laboring to protect by force what can no longer be protected by practical efficiency or general social consent."
John Perry Barlow, "The Economy of Ideas: A Framework for Patents and Copyrights in the Digital Age (Everything You Know About Intellectual Property Is Wrong)," Wired 2.03 (March 1994). This document can be accessed at: www.wired.com/wired/archive/2.03/economy.ideas.html.