1. I use the word "commodity" to refer to anything of value to someone: anything that is produced or traded, be it a good, service, natural resource or anything else. 
2. Most commodities have conditions that might be considered ideal for their production. 
3. I consider commodities to have natural places of production. That means: places where the prevailing conditions are closely suited to the profitable production of that commodity.
4. These conditions include all factors, including people and their skills. of course, they can and do change over time, for varying reasons.
5. If the correct conditions exists, commodities should and will be produced in their natural place of production or places that can, without too much difficulty, be adapted to becoming natural place of their production.
6. This should create efficiency. There is, of course, the question of what happens when a place is the natural place of production for commodities of a value that would be unable to sustain the area in acceptable or desirable standards.
(i). This is not an argument against the practice of producing things in their natural place: there are mechanisms to answer that question. The answer depends, of course, on the particular circumstances.