2. - What's most interesting about Robin's argument is not just providing the broader philosophical context for the emergence of subjectivism - it's making the connection between that and the relentless anti-socialism of the Austrians. That's the real value-added. That's the point of the specific associations with Nietzsche that Austrians have that some others don't. This was the purpose of the Weiser quote where he said that the whole point of marginalism was to prove socialism false.
3. - Nietzsche obviously has other ideals wrapped up in his anti-socialism and subjectivism that sit uneasily with many Austrians and subjectivists generally. This is where the portion of the essay starting with the problem of "squaring Nietzsche's circle" comes in. Schumpeter does this through what Robin calls the "relocation of politics in the economic sphere" through his discussion of entrepreneurs. Entrepreneurs are the restless creative force behind real change - the sanitized Austrian ubermensch. This was a particularly good example from Schumpeter:
"There is the dream and the will to found a private kingdom, usually, though not necessarily, also a dynasty. The modern world really does not know any such positions, but what may be attained by industrial and commercial success is still the nearest approach to medieval lordship possible to modern man."The version of this in Hayek is similarly entrepreneurial - dedicated to generating new frameworks rather than fitting into existing frameworks. This, for example, was fairly Nietzschean: "To do the bidding of others is for the employed the condition of achieving his purpose."
4. - Hayek's note to Salazar was... illuminating.
5. - The essay makes me want to know Corey Robin's view of "Why I Am Not a Conservative"