In many cases, and even more so in the most critical components, there is no second tier of suppliers. There is no market for second tier components. Using seco

In many cases, and even more so in the most critical components, there is no second tier of suppliers. There is no market for second tier components. Using second tier components would subtract so much value that OEMs in highly competitive businesses, like Apple or Samsung, can't even consider such substitutions. So we can't "go it alone." That may be a feature, not a bug.