A recent article on the blog Zero Hedge makes the point that China now has four of the top 10 largest banks in the world, when as recently as 2005 it did not have one. While that may concern many, it does not overly concern me. What DOES concern me is the incredible growth of the largest banks in the past 20 years. 

Take a look at this chart:

In 1991 the world's largest bank had a market capitalization of $13B. Today, the world's largest bank has a market cap of $225B! And today the smallest of the top 10 largest is nearly 10 times larger than the largest bank in 1991