> People are at least pretending to do work, you won't be able to access the network, you won't have common classes to complain about together, etc. etc. We're somewhat suspicious of non-students, too.
Those are social-status problems [and thus, I could answer snarkily, amenable to social engineering.]
A University is a clique of people who pay a lot of money to attend a University. If the only technical advantage everyone gets from paying the money is access to the lectures, and in the long run the lectures aren't what matter, then why is anyone paying the money?
"University", in that sense, seems to be a Prisoner's Dilemma set up by lecturers to rob students. No one individual can stop paying, because it excludes them, even though the group as a whole would be better off if they all just rented a few apartment buildings together instead of paying massive amounts of tuition.