In 1998 my enthusiasm for openness was given a boost (or started?) by David Wiley and the Open Content license that he developed. At that time the use of such licenses, which have been superseded and absorbed by Creative Commons, was very rare. (The LeTTOL course was originally published under an Open Content License, though this seems no longer to be the case.) Ten years later, David Wiley's influence has grown a great deal, and his 85 slide presentation Openness and the Disaggregated Future of Higher Education deserves to be widely viewed, though you can only follow Wiley's argument to a certain extent from his slides; and without that you cannot develop a critique or endorsement of it.
[With thanks to Dan Barker for highlighting this.]