Anarchy is not a system. It is just a natural state of existence without coercive authority. Historically, this must have been the case before government ever came into existence so therefore it must have been a very successful existence because here we are. Besides, all animals live in this state. It is successful by its very nature.[/quote]
Even on that point you are wrong. Most pack animals defer to a leader or an alpha member who has authority over the pack. Some insects are organized - unwittingly, no doubt - into rigid hierarchies where survival of the colony or the hive takes precedence over their own lives.
Coercive authority exists within almost all organizations. That’s how they remain organized.
Find a job. Then go in one morning and announce to your boss that you’re now doing some other job of your choosing. Then experience coercive authority first hand.
Governments don’t spontaneously appear out of thin air. At some point, groups of people, even the dumbest ones, realize that it is inefficient for each individual to try and address each and every situation. So delegation of power happens and governments eventually follow as organized systems of power delegation.