It is as likely that tying a university degree as the minimum pre-requisite for a decently paying career is driving the price upwards. Increased competition for desirable placements is the classic limited supply high demand scenario.
The problem isn't the availability of loans which are just a side effect but the focus of education as a gate to future success.
BTW from ancient times up until the last couple of centuries, patronage was often the primary income source for artists and scientists, the rich and powerful would subsidize them, offer sinecures to allow them to create, and the patron would get to show how wealthy and sophisticated they were.