Earlier quoted context omitted.
Exactly. The factories follow the Cheap Labor. From US to China, then it was China to Thailand/SKorea, then from Thailand to India. Probably don't have chain correct, and it is different for different industries. But there was definitely a progression of 'local salary goes up', 'time to move to next cheapest country'.
Surely though there's still plenty of places in the world that, on the basis of labour costs, it would be vastly cheaper to operate than in the US. On that basis I'm not convinced wage growth in SE Asia is the primary reason the US manufacturing industry is deciding to reshore. Is the same phenomenon occurring in other wealthy countries that haven't put in place taxpayer funded incentives to do so?
The issues are generally that in the next largest potential cheap manufacturing sources (South Asia, SE Asia, Africa) they’re either not big enough or have extremely poor logistics and red tape. A big part of the East Asian miracles have been extensive infrastructure and bureaucratic emphasis on making exports as efficient as possible.