Actually my list is wrong actually. My list was supposed to be things that CREATE wealth. Marketing, transportation, warehousing and retailing do not create wealth at all, only transfer it. These are "middlemen" processes that are actually adding to cost of the product. A necessary but expensive detriment.
Almost two-thirds of the rubber in the world is produced in three countries: Thailand, Indonesia and Malaysia. How much is that rubber worth in those countries, and how much is it worth after it is transported to a production facility?