"Ostensibly" is the mistake in your formula. Current events are replete with examples to the contrary. It's not equivocating to recognize that governments are organizations of humans, subject to the same limitations - the larger they get, the harder they are to manage well; talent is incredibly important to success in mission; leadership is incredibly important to integrity, ethics, and strategy; lower oversight and mediocre control structures lead to abuse. You can see the challenges that government as an organization has there. And as to scale..? Son. At least you can "ostensibly" choose whether or not to interact with corporations unless they are colluding with... government.