Yes, people do profit from that debt. Good! Because otherwise you wouldn't be able to turn some of that future earning potential into buying power today. This ancient innovation, the loan, allows us to do that. If the lender didn't stand to profit from interest, he wouldn't lend. It's a triumph of capitalism.
The problem with education loans is that they're not real loans. The government gives them distortionary financing that inflates tuition. Everytime the government raises the max loan amount, tuitions rise to match it. The college bureaucracies grow to match revenue. It's the same that happens with any bureaucracy that gets unearned money.
Everyone should pay the full price of their college education, either up front or in the future. That's the best way to keep college affordable.
Free markets work, why is there this presumption against them?
There are many reasons that people have debt, and it's not all exorbitant spending. At the same time SOMEONE is profiting off that debt, and they have a vested interest in keeping that debt alive. This is a good talk that discusses nonintuitive pains the middle class is experiencing: https://www.youtube.com/watch?v=akVL7QY0S8A