Isn't a police state where a government is concerned with security above all else? To my mind, a place where private organizations are above all concerned with security is the exact opposite, anarchy, since there's no collective security framework in place to take the security burden off private organizations.
Police state on the inside, anarchy on the outside. This makes it even more similar to governments - sovereign nations are the highest organizational level; beyond them, there's no one to defer to. International affairs is anarchy - everyone's pogo dancing (to the tune set by nuclear powers).
(When concerns of security become the main worry in an organization, the term we historically use to refer to it is "police state".)