One major difference is that the American banking market is significantly more fragmented as a policy choice compared to Europe. By share of deposits, the top f

One major difference is that the American banking market is significantly more fragmented as a policy choice compared to Europe. By share of deposits, the top four are JPMorgan Chase at 16%, BofA at 15%, Wells Fargo at 11%, and Citibank at 5%. The fragmentation means it’s very difficult to get thousands of credit unions and smaller banks compliant with things, since the lesser regulations for these smaller institutions is a policy choice to let them survive and thrive. The US favors these to avoid market concentrations like the big cross border European bank failures in the financial crisis, and also because smaller banks lend more to small or rural businesses.