Harvard is a good example of artificial scarcity. They have an extension school[1], where they advertise that you'll be given a Harvard education, by Harvard faculty, virtual or at the Harvard campus. It has somewhat open-enrollment, and thousands of people enroll every year. They're happy to take their money, but the students aren't allowed to say they're a Harvard graduate, they have to say they're "Harvard Extension School" graduates.
Harvard knows it's whole mystique is based on elitism and the artificial scarcity it creates by denying people admission.