That's correct. It's a market failure that needs to be remedied through law and regulation.
Hyper-specialist species can amazingly exploit their niche, but they're the first suffer and go extinct when things get disrupted. It's the generalists that survive.
> From tax cuts to relaxed regulations to tariffs, each of President Trump’s economic initiatives is based on a promise: to set off a wave of investment and bring back jobs that the president says the United States has lost to foreign countries.
https://www.nytimes.com/2019/08/13/business/economy/donald-t...
In industries where innovation matters, how do you regulate for producing a good enough product?
Could you regulate Intel to fix their 10nm process?
Do you want a laptop with the reliability of a Fiat, or the reliability of a Toyota?
Not saying it is impossible, but countries quickly run inito problems when their home produced goods are strictly inferior to the imported goods on price or quality or other metrics.
The market, as you note, selects for hyper-specialists, but crises aren't kind to them.
Strictly inferior home-produced goods are better than no goods at all, and the capability to produce them may have systemic benefits (in flexibility, resilience, avoiding certain kinds of path dependence and local maxima) that are not visible when looking at the goods in isolation.
What law and regulation can do is keep a nation on a more generalist footing, and keep it from hyper-specializing too much.
Edit: alternatively, countries could be much more trigger-happy when it comes to banning flights from potentially infected areas where some kind of virus starts - basically a lot of false alarms. Companies would simply have to adapt.
People already invest on much shorter timelines than 30 years.
What if Boeing goes bankrupt and the only reliable plane makers are PRC companies (usually state-backed, even if it's not explicit)?
If the US wants to help out US manufactures for strategic regions, it can apply the usual "made in USA" government purchasing rules, or maybe a tariff.
Boeing's efforts to consolidate the entire US aerospace industry into one company have hurt our society.
https://en.wikipedia.org/wiki/Category:Boeing_mergers_and_ac...
Where that division line might be isn't clear to me. For instance the 737 is both a civilian airliner and a military maritime patrol aircraft (as the P-8: https://en.wikipedia.org/wiki/Boeing_P-8_Poseidon)
https://www.nytimes.com/reuters/2020/03/18/business/18reuter...
It's more difficult than that. Links in the supply chain aren't independent. Supply and demand must balance. Chinese manufacturing is spinning back up just as European and US demand is dropping. This will cause further damage to the companies on the supply side. And as Europe and US spin their economies back up, China may not be able to meet the growing demand in full. It'll take a while before this reaches something resembling an equilibrium.
https://www.wsj.com/articles/viral-outbreaks-once-rare-becom...