This kind of realization is overdue from both Japan and the US. Yes, companies like cheap labor, but cheap labor is to be found many places in the third world. Why go to the place that has a government that is sucking up all the profits to buy missiles pointed at Japan and the US?
I know not a few people in U.S. still are uncomfortable with such a prospect.
Earth to Walmart, Earth to Walmart; come in Walmart!