In the US we now have that issue. Our manufacturing capacity has shut down and moved overseas. It would take years to rebuild the infrastructure and train capable workers. (Our H1B immigration program provides us with the needed professionals we can no longer educate and train domestically.)
It isn't so simple as to say "If we need it, it will be there."
Hi,
strongly disagree, my nephew started work at my brother in laws engineering
company in September and is already producing work of a standard of other employees. The company has a 41 hour week, you could easily increase output 2.5 times by doubling shifts and working weekends.
I feel if you have the technology, resources, population and the basic infrastructure you can produce the plant (and human resources) necessary to build all the starships you need.
Kind Regards
David