> I think that this is the particular threat that America sees from its own ally and there will likely be some efforts to curb or limit South Korea

I disagree with that. The Korean defense manufacturers like Hanwha work hard to also build production capacity within the US and share or license IP from American firms (eg. Boramae and GE Aviation plus Lockheed Martin).

SK's industry will continue to coexist and thrive with a US partnership similar to how the Israeli defense industry built linkages with the American ecosystem (eg. Elbit).

It also helps that Korean defense companies being part of larger chaebols like Hanwha are able to link defense production contracts with other industrial deals (eg. battery and renewable tech in Hanwha's case).