FTX logo with crypto coins with 100 Dollar bill are displayed for illustration. FTX has filed for bankruptcy in the US, seeking court protection as it looks for a way to return money to users.

Rob Nichols is the president and CEO of the American Bankers Association and Dennis Kelleher is president and CEO of Better Markets, a Washington-based nonprofit that promotes financial markets reform.    

The recent turmoil in the trillion-dollar crypto sector, including FTX's sudden liquidity crisis and spectacular collapse, has updated the concept of a bank run — made famous in movies like "It's a Wonderful Life" and "Mary Poppins." But this time, the run hasn't been on a bank at all.