On the other hand, a lot of poorly paid careers are actually somewhat important, they're just (unfortunately) treated terribly as far as pay and conditions go. For example, journalism, teaching and caring for the elderly are all career paths/areas which are low paid and (perhaps) over supplied, but I don't think I'd want people to start leaving these jobs en masse to say, work in marketing or finance.

And on the academic side, I'm not a fan of the idea that everything should be focused on the career side. A world without the humanities might get university graduates earning more money, but it'd feel poorer in some sense at the same time.