If you were designing a financial system from scratch, in 2024, would you come up with banking?
That central traditional trick of banks — that they fund themselves with safe short-term demand deposits, and use depositors’ money to invest in risky longer-term loans, with all of the run risk and regulatory supervision and It’s a Wonderful Life-ness that that involves — would you recreate that if you were starting over? Plenty of people — insurance companies, retirement savers — want to earn a return on their money and don’t need it anytime soon; their money can be locked up in long-term loans. The money that people keep in the bank just to pay rent and buy sandwiches doesn’t need to be pooled and invested in risky loans; it should just sit in the vault. This idea — that bank deposits should just sit in the vault (or, realistically, in electronic money at the Federal Reserve), while risky loans should be funded by long-term investors who intend to take those risks — is sometimes called “narrow banking.” All those crises! The traditional business of banking is necess...