We know what government is per se, regardless of the motives of the earliest state governments.
But here we miss an important point which is that government is natural to human societies. The mistake is to think that government is some artificial construct at odds with human nature. Tribes are governed. Families, the smallest society, are governed. What we call "government" is just a modification of the most basic form of government of the family (kings, for example, were analogically fathers of the kingdom). The authority of the state is derived from the authority of parents through the principle of subsidiary.
I agree with the spirit, but I prefer to reject the natural/artificial distinction. Societal and biological evolution can be a very "arbitrary" processes. Sometimes something just happens, and is good enough, and sticks around. It's ultimately pretty subjective which things are "over-determined" and what wasn't (photosynthesis? agriculture? Something like eukaryotes from endo-symbiosis?), without being able to run a bunch of difficult experiments.
Government and money are two institutions who's origins are much debated, but I would be find replacing them with something else, "self-perpetuation" replaces "natural" for me.
I also so think this is dovetails with the best argument for reproducible bootstraps (as the follow up to reproducible builds). Without that, and like with our socials institutions, we have a a "historical bootstrap" we are constrained by. But by making an artificial bootstrap, we gain some freedom to tinker rather than being completely constrained by historical happenstance.
With software it is clear what this looks like. With something like governance and money it is less clear. Certainly it's hard to imagine the John Locke style arguments bootstrapping from "primitive man" working out, as children must be raised in a culture before they get the privileges of democracy, and are thus biased. But perhaps there are other more feasible ways.