> Societies used to understand this and put lots of limits around exploiting
They still do (at least in the US). Jewish people have access to Heter Iska loans according to their religion. They do not extend this to gentiles.
Humans have known for a long time usury is inherently predatory. Nobody should profit off simply having money.
And yet, the banker truly gives me value if I wish to start a business, or upgrade an existing one, and I don't have the capital to do so. I need money to make money, and am willing to pay for the privilege of using someone else's money.
> usury is inherently predatory. Nobody should profit off simply having money.
Well, the time value of money is a real thing.