Earlier quoted context omitted.
This is too glib: If you imagine a world where every critical industry is replicated in every large nation, often inefficiently or inadequately, that’s a world where the average person is much, much poorer. And for what?
Why? The efficiency gains are a matter of size of the average company, not a matter of the total number of companies. If what you said were true, it would be cheaper for there to be only one flavor of soda (as Bernie Sanders might have put it) rather than dozens. Competition is better for consumers than monopoly, and that applies even when the consumers are nations.
Thus to sustain those industries (semiconductor fabrication in this case) industrial policy (subsidies, tariffs, government investment, “Buy American” rules, … ) is essential.