This is how the world works just now. And the screw example comes from Apple trying to produce the MacPro in the USA. It isn’t just about your factory, it is all the parts you need from to make something and in the USA, EU, and Japan you just can’t produce some products as there aren’t the suppliers even on the same continent as you. Cricky look at even baby products, those manufactured in the EU now have to use silicone as they don’t have direct supplies of latex rubber. Or Apple with their screws. Or any number of products.Imagine being so dependent on a foreign country that without them you don't have screws or medicine. This is ridiculous.
When I was living in Thailand for a bit there where so many factories for everything from glue to string and any fabric or rubber we needed.
The factory producing a camera might be a profitable thing, but a factory producing screws, wires, even copper might not be.