[DiogenesKynikos]

That's writing off a lot of the educational benefits of a university. YouTube lectures don't recreate the college educational experience. You don't get the group sections with the TA, office hours, personal feedback on your assignments, a group of students studying the same thing who you can work with, undergrad research experience, personal tutoring from graduate students (which undergrads at some elite universities like Harvard and Oxbridge get through their dorms), etc.

Most people don't pay much to attend Harvard anyways. Only the rich pay anything near full tuition. It's probably cheaper for the average family than most state colleges.