If anything, economies of scale are a powerful argument for free trade. Say, we can have a single company in Taiwan running insanely capital intensive chip fac

If anything, economies of scale are a powerful argument for free trade. Say, we can have a single company in Taiwan running insanely capital intensive chip factories making chips for the entire world. One downside of this being resiliency; what happens to the global electronics supply chain if China one day decides to invade Taiwan? Something not taken into account in typical economic models. For similar reasons developed countries still try to have things like domestic agriculture, despite that being a low value add industry where poorer countries might have a large comparative advantage in a hypothetical free trade scenario.