This is some crazy graph of bodybuards guarding each other's family members. If you kill your client then why on earth would his other employees give a shit and kill some defenceless wife and child to avenge their former master?
When it isn’t working well, it fails dramatically (Zimbabwe, Argentina, etc).
Fiat money (or any money, for that matter)only works till it works because it’s extremely useful for all concerned, and the alternative is a PITA.
The doomsday scenario is hardly a win/win.