I found this comment on Quora:
Through 1992, the top 50 colleges in the USA got together each year to collude on:
amount of tuition
base salary for assistant professors
preventing any bidding wars for applicants
Then the Federal government sued and put a stop to that.
However, by that point the tuition was way out of whack and the private elite colleges are still allowed to increase tuition at a rate that is above the inflation rate, therefore keeping tuition very high.
At the same time the endowments have increased to huge amounts.
Elite colleges are being run like corporations with the goal to maximize income and continually increase the endowment.
Therefore, tuition will continue to rise (as every college uses the elite private college tuition as their yardstick) until the Federal government sues and forces the elite colleges to reduce their endowment by using the money to reduce tuition.
Elite colleges will gobble up all the money that they are allowed to........
https://www.quora.com/Why-have-college-costs-increased-so-dr...
Gov intervention is probably needed.