Here's a list of 100 entrepreneurs who succeeded with little or no education
I suppose it depends on your definition of education.
Abraham Lincoln is the first gentleperson on your list and I would submit that he is one of the most educated presidents the US has had. He managed to become educated without much formal schooling, which is quite the accomplishment. This is based on my understanding of the word educated, however.
If you define an education as the transmission of wisdom or knowledge from those who have it to those that don't, I can conceive of few better ways to acquire an education than to spend one's youth reading books, provided one has the appetite for it. Mr. Lincoln seems to have been no slouch in this regard! Not to say that a great institution cannot generally out perform reading to one's self if the student maintains an equal appetite.
On the other hand, quite a large number of people attend school without receiving much knowledge or wisdom, and I concede some would claim they received an education. I wouldn't agree. If ITT was giving people an education, as I define it, I suspect the value of the experience would more easily subsidize the cost, regardless of the reputation of the degree.
I strongly believe that no one is really successful without an education, and many are able to achieve great things by acquiring an education in an unusual manner. Lincoln is no exception.
Unfortunately, I think the modern conception of education serves institutions, more than the population, who charge tuition and distracts from the original intent and meaning of the word.