Earlier quoted context omitted.
What's wrong with someone educating people and making a profit while doing it?
The problem with for-profit prisons is the misalignment between what's good for profit and what's good for prisoners. Where the prisoners can't "vote with their wallets" to counter-balance this misalignment. I don't see a similar issue with for-profit schools. In order to attract students they need to to provide good education and foster a good reputation.
Or they just need to dupe people who don't know any better.
A lot of the people who end up at these places are poor, don't have friends or relatives with college degrees, didn't get good advice, and simply don't know how to recognize a scam. Now they have six figures of student loan debt they can't get rid of, and a low-prestige degree that many employers won't even consider.