All businesses should be required to operate their business in a way that does not significantly degrade the quality of the environment. Simply put, businesses should try to operate in as much of a closed system as feasible. They should internalize all negative externalities by either doing what it takes to prevent these externalities from negatively affecting the environment or by paying a penalty for allowing them to affect the environment. All these costs would naturally be incorporated into the prices of products and services produced by these businesses.