This is 100% spot on. Organizations build up value over the long-haul by learning things and then building on top of those things, learning some more, building on that, and so on.
Look what happened to G.E. They outsourced everything they possibly could and had a decade or two of unparalleled profitability. But, over time the well of ideas and competencies for products and services dried up and they went from being a powerhouse to a cautionary tale.
Don't export knowledge or know-how to save a few bucks. It always comes back to bite you.