Was SVB too big to fail? Signature? Apparently!
TBTF is now a popular concept more than a legal one. We need explicit universal deposit insurance along with the rules that make that guarantee tenable. I also think experiments in narrow banking, e.g. permitting each state to charter a narrow bank open to its residents and guaranteed against losses (e.g. due to fraud) by its own treasury to access a special type of reserve account, need to commence.