LeeD was sort of right though. Owning a bank in America seems like a pretty low risk way of making money. A bit like insurance companies. You cannot really lose. If the going gets tough and some clients default, get government help.
Why don't more people do it? Because it's a lot of incredibly boring work. A bit like pushing the tennis ball back over the net.
Someone with no experience in anything can say whatever he wants. The financial industry is fraught with risk and regulation and requires a whole different skill set to succeed. That is why the best minds are working in finance, and they reap the rewards. Easy to criticize them, but it is mostly jealousy because they know how to make money. Money is its own business. These guys have realized it. Rest think that money is something that is paid in return for something and spend their retirement years in resentment, pinching every penny. Others build their own tennis court and enjoy.