But once they have the PM, designers, architect and devs. 'on staff' and all 'over there' - then you are the 'not connected' contractor.
Moreover 'they' are getting better across the board.
Japan made crap until they made the best cars in the world.
China made crap but now they have the top 5G gear and all of the patents, and would wipe out a big chunk of Western companies were it not for 'security' and other issues.
Americans are fairly instantly replaceable with Canadians, Aussies, Brits, and almost as easily replaceable with French, Italian and Germans etc.
'Remote Work' is like an 'unlimited, free H1B' program.
Many jobs are safe, but many are not.
As someone who manages people in many different countries from the US I can definitively say this is not true. You have to comply with local labor laws wherever you hire your employees. For example, many countries like Poland, England, and France require very longer notice periods and changes in job responsibilities can be a sticky legal issue. HR has to be equipped to handle all of these nuances.
If every third-world country follows the South Korea / Japan playbook, the world economy would absolutely explode with growth, and US workers would certainly benefit from this.