People seem to think their bank balances are actually there at the bank instead of loaned out sometimes in bad unwise loans, thank you Fanny and Freddy Mack, and senators Frank/Dodd. Banks loan out I believe 85 percent and only have about 15 percent reserves actually on hand. A collapse of the economy, or any currency crisis or any crisis causing a run on the banks would collapse the banking industry like a house of cards.
If the banks don’t have enough digital currency on hand to satisfy a run on the banks then the Federal Reserve will just magically create more to satisfy the need.
Just like they always do.