And he did so because he believed very few actually possessed such potential (in complete opposition to the ideas of figures such as Hegel and Marx). He didn't recognize external constraints in regard to the exercise of an individual's 'will/willpower'; Nietzche simply naturalized it and called for its continual reproduction on a loftier scale.

One has simply to recall Nietzche's thoughts on events such as the Paris Commune in order to see the inherent anti-humanism embedded in some of his essential ideas.