So what percentage of budget from, say, the UC system went to administration forty years ago vs today? My point was that this should be public data, yes, surprisingly, is not mentioned.

Per https://nces.ed.gov/programs/digest/d21/tables/dt21_334.30.a..., after two minutes of googling, if I am reading correctly, the percentage spent by four year institutions on “academic support”, which includes admissions, has remained at about 8% from 2000 to 2020. That seems like a basic statistic Silvergate should have on hand, and one that invalidates his hypothesis, right?