Jim Manzi makes the case over on The Corner.
Here’s his main point:
When tax-advantaged non-profits start to accumulate billions of dollars of cash through investment gains, and the insiders seem to be doing very well, it creates legitimate pressure for some legal changes. There is a broad range of alternatives: capital gains taxes on investment income, directly taxing the endowment, placing limitations on employee compensation, and forcing the distribution of a fixed percentage of the endowment are all obvious choices. Sanctimonious talk about “the mission of the university” is not likely to stop this; unfortunately, giving lots of money to Democratic politicians very well might.