Probably worth speaking about in the same vein as high tuition costs and the loans taken to cover them, is that parents (like mine) will have their kids take out student loans so they can supplement their own income. I’ve known a lot of people that managed to go to reasonably priced schools but ended up taking out $20,000 in debt for their parents. There are a few reasons why that range from unfortunate to opportunistic (in my case, my parents are not good people). The fact that university costs so much that tens of thousands of dollars in debt is acceptable to be freely loaned to be arbitraged is a huge problem.
I have a feeling (but no evidence) that this applies upward pressure on the amount that can be loaned and that this increased lending reinforces upward tuition costs.