Is calculus ten times more expensive to teach than it was thirty years ago? Is Shakespeare? Supply is totally inelastic, because it's almost impossible to get a new college accredited (for profit schools all started with an already accredited school and expand them). Same with demand - not having a college degree puts you on a lower track that's almost impossible to break out of, and the connections, etc. mean that MOOC's aren't a good substitute for undergraduate education, while the professions all require specialized schooling afterwards.
So where does all the money go? At a non profit university it goes to faceless, non-teaching administrators to play the school prestige game, and maybe a little research.
A generation is broke because they're not paying for education, they're paying for education that can't be unbundled from empire-building.