Comment Re:Education shouldn't be for profit anyway (Score 3, Insightful) 272
It's not just a dedicated place of learning, it's a place of research.
Many of the top schools aren't called "top schools" because they teach well. They're top schools because they have to researchers and experts a wide range of subjects who make themselves available to students. If you have a large number of the top people in the world, and they all expect to have the highest salaries of anyone in their line of work, then you have to find a way to increase income to meet their demands. When you see a faculty to student ratio, it can be interpreted as the number of students it takes to pay one person's salary (on average).
This is all on top of providing infrastructure and a vast number of services to enough people to fill a small city (in many cases).