There was a time when network strategy was relatively stable.  Not anymore.  The cost and reliability of transportation drive a rethink.  For high-value, low-weight items like electronics, it is still economical to transport them zillions of miles and even by air.  Low-value, heavy, or “fluffy” products need close manufacturing sites.  That is why electronics can be made in China.  While toilet paper has always been made in plants close to consumers, manufacturers of items like cat litter are now putting plants closer to the cats.