Facebook can in fact do most of the things you mention. Their 'taxing' of netizens takes several forms, mainly displaying ads and collecting and selling inform

Facebook can in fact do most of the things you mention. Their 'taxing' of netizens takes several forms, mainly displaying ads and collecting and selling information about them. Both of these are profitable to Facebook (or they wouldn't do them), and injurious to users (in lost privacy and attention). Facebook can choose how much of it they do; they balance taxation (profits) with user retention (emigration). Facebook have a monopoly on many kinds of force on their platform. They and only they can remove or block content and ban accounts. And unlike other states, there are no courts, no constitution, and no way for rebels to gain these powers for themselves by force. The question of granting netizenship is less important, because Facebook encourages immigration: they'd love all the world to be their netizens! But they can exile people they don't like, or block them from joining. Facebook also have partial control of the presses in their country and of the commerce at its borders (in- and out-going links).