Yeah, as I added in an edit, in a corporation run along "anarchist" lines (although they often call it something else), workers hire and fire managers, which is the opposite of "regular" businesses. And top-down hierarchies usually have a separate "enforcer-arm" because that's the only way a higher-up boss can really enforce his will on the hierarchy of people below him/her, because coercive authority requires a means of coercion, and if your only power-base is the hierarchy itself, then you can't coerce them.
e.g. sacking your vice president, you call for "security" to escort Mr so-and-so out of the building. Whereas a VP in a democratic workplace can only be sacked if the people who work for him decide to replace him. And even then, he can often still work there, but people just stop listening to what he tells them to do and pick someone else to listen to. So in other words, bottom-up authority might actually be more natural, because there's no need for a separate enforcer team outside the hierarchy itself.
While this is accurate, I do have one tiny nitpick - corporations don't always need their own enforcer-arms. They are often the only feasible and legitimate source of income, and people need income to survive. As long as they have a monopoly on survival, they will be able to coerce.
As for how they prevent the poor from raiding their resources? The government, of course, and the police and military. They prevent uprisings and theft - they protect the corporations.
I don't agree with the nitpick. Because it's the
enforcement that allows the boss to fire you. e.g. the CEO can say to a VP "you're fired" but if his entire authority comes from the VP's they can just say "no I'm not", and the CEO cannot enforce that command. After all, he's not the guy who writes the paychecks or locks the front door. What about the VP in charge of the accounts department, with only a direct chain of command, he can't order that guy to stop paying people unless he agrees. No, they really
do need some arm called "security" who are outside the chain of command and nominally work directly for the owner-class, so that they can in practice kick anyone out, including the CEO.
We've just been indoctrinated that authority is just automatic. i.e. an authority figure says something and it gets done just because he said so. But reality doesn't actually work like that. A leader needs the consent of his lieutenants to carry out his instructions (just as they need the consent of theirs), even in a dictatorship.
"Hitler power" didn't flow downwards just because he's Hitler. Hitler's power flowed upwards into him because he had subordinates
willing to carry out his commands. It's his followers that gave him power, and the Gestapo allowed him to keep pressure on that hierarchy. Dictatorships are keen on secret police not because they have any great need for information gathering, but because having an enforcer arm outside the normal chain of command allows you to control your chain of command (who are the source of your power) through fear. Note how in Russia they killed KGB chief Beria after Stalin died because the nation's leaders were scared of his uncontrollable power.