(If performance at an identifiable subset of schools is better, then it's more that spending resources on the other schools is questionable than it is that higher education is in a crisis)
Median salaries pool are much higher at the top yet tuition is really similar across all schools.
This is true with undergraduate programs as well. Median starting salary after graduation at University of Florida is 52k. FIU and UCF, both a few hours away with similar programs? 46k.
University of Houston? 53k. Rice University a few miles away? 64k.
I've named schools that are all pretty good...the story gets much worse with private universities that are not selective. There are always people who do fantastic regardless of which school they go to but in aggregate schools matter a lot.