I think OP is confusing the way full libertarian society could  look like anarchic systems  and could organize as company towns with Fascism.

 The assumed end state of company towns is that the individual can choose to stay or leave. The assumed end state of fascism is unconsenting individuals at the mercy of a private/public entity. 

 In practice for true fascism to exist as your reading indicates it requires a collective to enforce the public/private power over the people. Both in Germany and Italy a strong collectivist government used the authority granted by the collective to compel corporations to control the people.  In effect socialism and fascism are the same thing with a different optic of who's controlling the masses. Public/private vs private/public governence. 

If OP wanted to argue that fragmented individualist society was easier to control and take over by a fascist society that may have some merit but to insinuate that full libertarianism is fascism is just historically wrong.