I worked for IBM about 25 years ago and was required to train workers brought to this country from India so that I could be fired and those workers could go back to their country and do my job. They were trained in only the skills and tasks that my bosses were aware of that I had and did, so when they went back they did only what my bosses knew about my job. So, I have first-hand experience with the problem you are writing about in this article. I'm glad to see that you're writing about this; it needs to be known. (Here's one of my stories about my experience: My Job at the "Industry Bowel Movement".)