Disclosure: i never went to college, I went to a trade school. Colleges really only started scaring the heck out of me when I started enjoying my career. After spending a day wrenching in a garage, we'd hit miller time and head down to the Soapbox Bar and Grill. Over the span of a month or two ordering buckets and shooting pool I learned our bartender Javon had a masters in biology and his fiancee Cortisha who bussed…
My prediction is that we'll see changes in the US system. The problem you're pointing out is the risk. Universities are the ones that IMO should be taking on the risk. If you graduate 3000 students a year, most will do okay and some won't, and that would be no big deal if college cost $800 a year. I predict that over the next couple decades we'll move to a system where you pay for college out of your earnings.
This would clean up another issue (not pointing any fingers with this). Colleges would nudge students into careers with better prospects. If they'd get paid less from students in certain majors, there'd be fewer of those majors. I could even see a system where "you're on your own" if you major in certain limited prospect fields. Universities that align their interests with those of the students will be the ones that thrive.
Disclosure: Professor for many years