With all due respect, fuck that. We do disruptive stuff with unintended consequences for millions of people as a matter of policy all the time, and the idea that it'll disrupt some finance goons' ponzi scheme does not bother me
It's incredibly expensive to run a university, and many people feel entitled to attend any university they can get into (not a bad thing, btw), but you can't suddenly erase the bill without drastically cutting costs, changing supply/demand, or otherwise altering the economics first.
The college level education system in the US employs almost 3.8 million people. Decisions here absolutely affect their employment, tax rates, employment rates, bank loans, financial industry solvency, etc.
This problem is incredibly far away from the space of YOLO tactics.
If you mean banks, there’s the problem that “let it die” often translates to “shift the obligation”, which typically gets shifted to the tax payers, either in plain sight after a bailout, or under the table by devaluing the currency (basically taxation without having to say it).
And many, many of the outcomes of that are bad