It&#x27;s just damn hard to evaluate how many hundreds of thousands people was working for aerospace industry and what would that cost in country with market economy. There also R&amp;D costs that was at least partially included for ISS while they was almost secret in USSR and most of documents on it are still not declassified since it&#x27;s all military R&amp;D.<p>This make me think of story on why something like Saturn V can&#x27;t be easily replicated as it&#x27;s was work of so many engineers.