Might not be about the popularity, the popularity is good, it's about the affordability.
The student loans were well intentioned, but just turning the money faucet on has significantly reduced practical concerns about pricing.
There are two sorts of campuses that have been *way* nicer than almost any corporate campus I've ever seen, medical and universities. In my day it was already pretty plush, and recently toured some and it's just gotten even more crazy, super large campus in the middle of some of the most expensive real estate with just amazingly nice amenities...
These easy loans started to help tackle the problem of higher ed being a *little* expensive and unfortunately made it a *lot* expensive over time. Needed to come with some regulation on the pricing side, at *least* for public universities.
Similar story on health care, by all means help people with premiums (even better would have been public option, but putting that aside), but don't just write whatever checks the insurance companies demand, regulate the health care costs.