Earlier quoted context omitted.
I don't think it is any different for physical property. What is a pound of gold worth when you are defenseless and someone else has armed men willing to kill you. Might makes right and owns all property is the default. Every situation that deviates from this is imposed by governments. A market around physical goods is no different.
Why did you choose gold as an example? How about a sword? Claiming that physical and intellectual property are the same is reductionistic at best. The fact that both properties are protected by power doesn't mean that they are the same. Physical property is not copyable. Intellectual property is.
I am saying their relation to the government is the same. Government maintains both, and creates a market for them by doing so.
No government> no private property> no goods for sale.
I dont see how copyable is relevant at all.