>Or the the rising wages in China means that building a fully automated line isn't as cost-prohibitive as it was in the past.
The wages don't play much role in it.
There is an article about the last Apple US factory, back when they used to make stuff here, and the guys managing it explain that it wasn't the wages that drove them to China (the extra cost would be negligible in a product's price, like a few extra dollars compared to a $500 price tag), but the economies of scale, with supplier factories for glass, metal, SSDs, parts, etc being literally next door to your factory, something that wasn't true in the US.
Yes. It's the logistics that make the giant Chinese factory cities the preferred manufacturing facilities. Wages are a happy side-effect of doing business with a lawless regime.
The wages don't play much role in it.
There is an article about the last Apple US factory, back when they used to make stuff here, and the guys managing it explain that it wasn't the wages that drove them to China (the extra cost would be negligible in a product's price, like a few extra dollars compared to a $500 price tag), but the economies of scale, with supplier factories for glass, metal, SSDs, parts, etc being literally next door to your factory, something that wasn't true in the US.