The more a university transitions to a student-focused, all-compassing city from a simple "school", the more non-teaching employees you need.
Want to go have a cleaner electrical grid than your surrounding area? Well, you'll need a power plant, energy manager, many technicians, etc.
Want a ton of greenery and trees? Well, you'll need landscapers, arborists, etc.
Want on-campus healthcare limited to the students? Well, you'll need doctors, nurses, healthcare admins, etc.
Want campus housing? Well, you'll need housing administrators, housing-specific custodians, etc.
Want to park on campus, but make sure parking meets current demands? Then you'll need a permitting system, permit enforcement, etc.
And on and on and on. Wants take work. Work requires people. People require wages.