>There's nothing inherently Chinese about opening a factory quickly.
I'd say there is one, the available population to work. India is really the only country that could come close just based on pure population and I don't see there being a drive to do that.
Rather anything that came close would have to be a combination of Indonesia, Malaysia, Vietnam, Cambodia, etc. all working to grow their manufacturing bases to come anywhere close to what China can do when it comes to setting up factories in the near future. Longer term maybe some African countries will industrialize that way, but I don't see a place meeting the scale of Shenzhen/Dongguan manufacturing ever again.
I recently got back from visiting a factory in SEA, and spoke quite a bit with the people there about how the area is growing from a manufacturing standpoint. They have definitely taken notice of what is going on with China at the moment and are trying their best to take advantage of it, but it isn't even close to what I've seen in China.