A Warrior or Soldier seeks no customer: he needs none.
A Judge or Sheriff seeks to eliminate the need for customers: cooperation.
A Merchant or Craftsman, seeks to create them for moral reasons: reciprocity.
A Banker of Financier seeks to create them for questionable reasons: rent seeking.
A Priest, Public Intellectual, or Politician seeks to create them for immoral reasons: parasitism.
Truth follows this hierarchy.