I think that property-children is on a continuum. When you have raiding parties and tribal warfare, children were taken as slaves. From that PoV then children are in the same basket where they are protected by the norms of society, same as property.
Saying you only own your money or house because we allow you to is like saying the only reason you don't get raped or killed is because we have a structure of laws against it. Yes?
But generic economic resources: yes. Ownership of pretty much anything including houses relies on social acceptance of the rules of private property ownership and market value. And that social acceptance can be conditional on things like taxes to fund social goods. If you don't want to play by the democratically determined rules, then you shouldn't expect the state to defend your property.