They do make 400-500 with your money as you said, but they also carry greater risk from default / bankrupt borrower
I am the kind of guy who grow my business with bank credit, and I've to say I carry all the risk since I'm the one who run the business
Yet all they do is risk assessment, supply the fund, collect the interest rate
but again in the other hand, I need them to grow rapidly....
trade off in the economy I guess