> Manufacturing requires logistics, capability of water/electricity and skilled labour. Those are not easily scalable across the globe.
You don't need fully-distributed manufacturing where everything is literally made everywhere. Go ahead and cross off every place without water, electricity and skilled labor, you're still left with dozens of countries. Now pick one in Asia, one in Europe and one in America. You're now on three continents. There are three more available if you ever feel like expanding.
> And manufactures do concentrate, it is easy to source parts to make stuff from the same region.
Which is fine, so do that, somewhere on each continent. Not in only one place in the world. Obvious strong candidates are China, the US and Germany.
> And in case of COVID-19, it is not the answer even, since, the disruption is almost simultaneously happening globe wise, capacity planning and shifting can't be that agile to adjust, let alone the demand will be hampered too.
It isn't really happening everywhere at once, though. It's happening everywhere at different times. We may get to the point where some countries have to use the same measures as China, but by then China may have succeeded in containing it and be ready to reopen. Even if it hasn't, you've still reduced the period you've been offline by the several months in between, and in the meantime have had notice allowing you to run 24 hour shifts in every other facility to build up a surplus in preparation for what may come there soon.
There are also implications to the countermeasures. The US just suspended travel with Europe. If you had a factory in Germany and one in the US, you're still in business in both places, making products for US customers in the US factory and for European customers in the European factory.
> But for key industry, like medical supplies, I think that is where the state should come and play, to incentivize a domestic capacity that could chime in handily when disruption happens.
The problem is, nearly everything is in that category. Nobody cares about where toilet paper comes from until you can't get any for six months.