There should be balancing forces for every activities in this world. Commerce is also not different. We cannot anticipate that all those who engaged in commercial activities themselves shall uphold the kind of ethics we have been discussing. What are the balancing forces that keep commerce on the right track? In the first place it is the simplicity of lives of individuals in a society that makes the commerce to continue on the right track. Here individuals will not buy anything at any cost. For this to happen individuals have to set right priorities and direct their own lives in a way that makes them self-sufficient, with respect to the basic requirements, to the maximum extent possible. Application of this balancing force is highly essential for a calm and pleasant life.
Practice it and make it a habit. Then the nature will make it sustainable by triggering necessary genetic engineering!