On Friday, September 29, 2017, 12:38:33 AM PDT, grarpamp
   <grarpamp@gmail.com> wrote:
   >There needs to be at least three fully independant
   manufacturers selling mining gear to the public.
   Assuming SHA-256 is a commodity, that's max 33%
   to each maker, plus random buyers into random pools.
   Question:  Why does a bitcoin mining hardware manufacturer WANT to sell
   that equipment?
   After all, the theory of transactions is that the seller wants the
   money more than the product, which the buyer wants the product more
   than the money.  But if the seller could make just as much money as the
   buyer does, keeping the machines and running them, why should he want
   to sell?
   One reason is that the manufacturer might be in an area that has
   relatively higher electricity costs, and the buyer might be in an area
   of lower electricity costs.  In that case, there is a reason to
   transfer the machine to the area with lower cost of operation.
                Jim Bell