Earlier quoted context omitted.
You still have to pay market rate for professors, executives, maintenance, etc, if you want to stay relevant. You can't just decide to reduce your income and expect nothing else to change. They're changing where their getting the income from, probably with the idea that former students of Brown who are now doing very well, will be willing to pay it forward to a new student who is in a similar position as they used to…
The exploding cost of education over the last generation doesn't boil down to an increase in teaching or even research staff costs. These costs are stable, largely thanks to the very low cost of junior academics. In the US, "administration staff" (everyone else) has blown up by 500% or more, proportionally. There have also been increases in non staff related costs. University' are fancier, more expensive and more inc…
We most certainly can, easily, we just choose not to.
We could bomb a few less hospitals a year and pay for every single American to go to college for free. We could make our corporations pay more than zero taxes and do the same.
But you are right about the skyrocketing costs, colleges have bloated massively and for really no reason other than that they have begun to be run as businesses rather than as public-focused academic enterprises.