education - free or __?

Open Courseware at MIT http://ocw.mit.edu provides access to classes, quizzes, video lectures, demos, etc.

But student-taken class notes...   whose property is it ?
http://www.boston.com/bostonglobe/ideas/articles/2009/12/13/freeharvardeducationcom/?page=full

If a professor spends years crafting a teaching method / style / content should she retain control of that rather than permitting it to be posted on youtube, unedited, and of uncertain quality ?