It's all those colleges and universities who have professors, administrators, staff, groundskeepers, cafeteria help that completely volunteer their services. And let's not forget the construction companies and workers who build the campi, and the utility companies that furnish the gas, water, electricity, telecommunications, etc. That's all freely given gratis, no string attached. All this so the little darlings can get a real education that will get them nowhere in life but hey, at least it'll be for free. Once they figure out how to get all those folks to donate their time and money and work.