All numbers approximate:
- Number of banks in the US: 4,844 (69,500 people / bank)
- Number of banks in the UK: 365 (184,000 people / bank)
- Number of banks in Australia: 95 (272,000 people / bank)
- Number of banks in Japan: 199 (628,000 people / bank)
Let's cool it with the doomsday talk. Every major economy (except maybe China, but they're weird so not counting them) has 2.5x+ the number of people per bank than the US. The US is the weird one.
If you want to look at this from a "return to fundamentals" perspective: the US is only a few hundred years old, and was built on some of the most virgin, rich, plentiful, resourceful land on the entire planet. That fueled 300 years of economic development the likes of which the world has never seen; and the nice thing about growth is that it really helps cover-up bets that were far too risky for any reasonable risk-taker.
We're not going to see big banks take on increasingly higher risk over the next decade. In fact, we'll see the opposite. Fewer banks, more regulation, and less risk taking, as the US begins to regress more to the worldwide economic growth rate.