Maybe I misinterpreted your message -- I thought you were talking about the decline of American power.
I am not concerned about it as long as the largest and the most innovative companies (Amazon, Tesla, Google, Apple, etc.) are still in America.

Btw, SpaceX is very different from the Soviet space program which was almost completely useless economically. Just to give one example SpaceX is currently deploying a major satellite constellation (Starlink) to provide worldwide internet connectivity. It is, in fact, a lot like the aqueducts.