Actually in Rome the sequence was (simplified) Kings, Republic, Emperors, Fall.
Corruption (Caesar et al), basically drove the end of the republic and the rise of the empire.
So the (proprietor-based) Geekzone model fails at the gate. NZ has no equivalent proprietor and can not have one without murder and violence...and then new, would-be proprietors see how useful those tactics are. Check out how that worked for the Roman Emperors (as they assassinated one after the other until the Empire collapsed).
Representative democracy evolved BECAUSE the general populace - and the more well-to-do, inparticular - got very tired of their lives being up-ended by "firm captains".
I'm surprised this even needs explaining.....though anyone lacking knowledge of history may well have no idea why things are the way they are.