http://www.thesportjournal.org/article/age-requirement-profe...
http://en.wikipedia.org/wiki/Eligibility_for_the_NBA_Draft
The degree is not required, but this forces most into at least one year of indentured service to a college. You can sit out, but how will you be evaluated for the draft?
But, for some students, it very well may be a trap. I've had more than a few friends spend $150k on education, to only make $30k a year as a middle school teacher. Friends who graduated with "independent study" degrees in "film and medicine." Some For some people, trap does adequately describe it.
Two additional points: 1) Conde Nast gives loans to editors and higher ups. [1] [2] 2) Having worked with some of the "all star" professors in varying capacities (and getting a glimpse, however small, of the bargaining process) a lot of other universities are often trying to poach research professors from NYU. Housing, which is a hugely hard "thing" to solve in NYC, is a large bargaining chip.
And I hear you on the necessity of this benefit. It's like anything else, if you want the best of the best in a competitive market, you have to find a way to pay them.
Schools should be allowed to pay whatever market salaries they must to keep their heads. If students don't like it, they can choose to apply to other schools. If alums don't like it, they don't need to donate. If faculty are jealous, they can work elsewhere.
The argument only breaks down when these schools get non-profit benefits. So why not just be done with it and take away the non-profit status? And then perhaps spread the big research dollars to true non-profits. But - unshackle the schools.
To me the bigger scandal is how much the head coaches get paid. That's truly the sign of a for-profit enterprise, and the athletes frequently are required to go to college to get to the pros.