Why do college-tuition increases outpace inflation? Because they can, says Tyler Cowen.

“Recall that 78 percent of the buyers in this market choose the public sector. Tuition is going up because it can, to paraphrase the old saw about the dog (or is it the monkey?). But too big a sticker shock across one year would irritate voters, who might then insist on tighter regulations on public sector higher education. Think about the equilibrium. Many state schools could earn more money by forgoing state aid and raising tuition to profit-maximizing levels, or some approximation thereof. Step-by-step, we are moving toward some version of this outcome. ...

“If the market discounters — who capture 78 percent of the customers — can raise their price, so can the other suppliers.

“If more people want to get into Harvard, Harvard doesn’t have much incentive to increase the size of a yearly class. The academic departments don’t want to lower standards by hiring more professors or adjuncts, and the development office seems OK with just raising the size of the required bribe for admission, rather than hoping that a bigger class means more donations thirty years from now.”

Cowen makes some other provocative points and links to further discussion.