Then why hasn't it yet? In fact, some lower-wage countries such as China are on the forefront of industrial automation?
I think the bottom line is that many Western countries went out of their way to make manufacturing - automated or not - very expensive and time-consuming to get off the ground. Robots don't necessarily change that if you still need to buy land, get all the permits, if construction costs many times more, and if your ongoing costs (energy, materials, lawyers, etc) are high.
We might discover that AI capacity is easier to grow in these markets too.