But if you could magically create a situation with no government like through armageddon or something, then a new "government" would arise and it would entity forcing a the security equilibrium achieved after at least a little bit of "squabbling".

The ones simply with the ability to put a stop to the squabbling is the "government". They would basically have a monopoly on the use of force. You would not have anything less than this, due to nature of human/animal hierarchical social structures.

This "government" entity is the kernel of the thing that would ultimately get hijacked by a money monopoly, unless it itself is a money monopoly, if there even is a money monopoly