> How much does a Vegas casino let the average person gamble that they don't already have?

Do people not just gamble on credit? I highly doubt casinos care about the average person's financials, as long as the money ends in their pockets.

I see no difference between the stock market and gambling, sure there's "smart strategies" to the stock market but at the end of the day it's the same result for anyone with a gambling addiction to either.