Affect of Organ Market on the poor

The article states that in the USA "poorer people are more willing to give organs than they are likely to receive them", since people who get donated organs in the U.S. nearly always have health insurance, while most of the people who give these organs do not. A market for organs would therefor be negative for the poor. Still an organ market would not only exploid the poor, but give them a chance to receive organs. Also it is suggested that this matter will not be changed much over time since "organ transplantation uses a “scarce resource that can only come from fellow human beings”...