Well, this is an extremely important point which has been glossed over by more than few.
There are shortages of things like hand sanitizer, antibacterial wipes, N95 masks, other types of protective gear……because all 160 nations in the world tried to buy as much as they could, all at the same time.
So, all productive factories for this “stuff” were running 24x7 producing their “stuff”……and if they weren’t, it was because all the “stuff factories” in the world were suddenly trying to acquire the same raw materials to make their “stuff”, as much as they could, all at the same time.
You don’t just snap your fingers and increase your manufacturing capacity, as you point out.
Thus, the reason why there are shortages of “stuff” transcends things like national and local politics.