[javagram]

College administration costs have been expanding rapidly over the previous decades. Part of that could be attributed to federal mandates, e.g. everything to do with investigating/achieving Title IX compliance is the result of government regulation and probably wouldn’t exist in an unrestricted free market.

Accreditation is also related to government and can require colleges spend money on things they might not have 50 years ago.

I suspect the biggest cost driver is federally-backed student loans though. When you’re paying with what seems like free money it’s a lot harder to control costs. If students run out of money and drop out of your school, that’s a bigger driver to keep costs down.