It's a big big money maker even today.

You have shys in illegal gambling places. You have them every where. Any place were people need quick money fast.

Also people who need quick money and can't get a loan from a real bank.

Beating people up? How can people pay you if you fucked them up?

You have to use physiology on them

Who is a good risk to pay? Guys that have families.

But to get a lot of money you have to have history borrowing from these guys. Or someone with a borrowing history has to vogue for the guy who wants the money.

So if he does not pay the man who vouged for you pays. Good luck in finding a guy who would do it for you.