The premise that China does around a third of the world's manufacturing isn't really that surprising, they have more than a sixth of the world's population and

The premise that China does around a third of the world's manufacturing isn't really that surprising, they have more than a sixth of the world's population and there are a lot of areas (e.g. India and Africa) that have large populations and a disproportionately small share of manufacturing. The real problem isn't that it's a third, it's that it will be something like 2% of commercial aircraft and 98% of PCs, and then the second one is bad. Single point of failure. That's the part that needs to be addressed.