Tuition fees should reflect the real cost of each degree course

Should it? To what degree does higher education exist for the benefit of the individual vs. the benefit of society?

One could argue that the sort of education that leads to a career in middle management is as much for the benefit of the student as it is for the benefit of society as a whole. But what about the education necessary for, say, a doctor?

Do we really want the cost of such an education to constrain the supply of medical professionals, likely below the need for them? Do we want to make that profession available only to those who can afford the education, rather than to those who are brightest and most capable?