Apple announcing they will continue to build mac pros in the USA is their signal to suppliers that they should follow them back to the USA. If the incentive to small-parts suppliers is good and the reverberating feedback are strong enough (small-suppliers bringing large suppliers, large suppliers bringing more small suppliers, rinse repeat), it'll lead other manufacturers to come back. If automation is going to take over labor, then location and labor-wages will matter less than supply-chain and the regulatory environment. If USA can get back the supply-chain, the USA rule-of-law environment, is probably preferable to China's rule-by-law environment.