The pendulem swings back and forth. Been in situations where companies outbid the inhouse production of items. Then the outside mfgr could not meet production schedules, quality, etc. The purchasing dept looks like a hero till the sh-t hits the fan. Then they bring the production back inside. And it starts over.
With the cost of transportation, heavier inventories to compensate for delivery times, etc., it'll swing back toward domestic production.