Earlier quoted context omitted.
Speculation.
Let's speculate a bit more. There are two possible outcomes to letting a large bank/financial institution fail: 1. Financial institutions cannot transfer funds between each other as usual and they cannot accurately predict who might fail next, so they pull back credit access. Spreads blow up as money supply decreases, causing a sharp decline in equipment investment and a big rise in consumer interest rates. Shit gets…
However we're still in serious trouble because of the moral hazard created. Banks have been given the greenlight to take similar risks again because they know they'll be bailed out in future.
Frankly, without also taking steps to force banks back into smaller entities that we can afford to let fail, all we've done is compound the problem and delay it until later when it will be worse.