If the number that sign the registry is in volumes higher than the demand, then people should not be concerned that they would have unscrupulous health care trying to predispose someone to death. That thought, alone, keeps people from signing the registry.
Also, we have to help the health care workers, the politicians and the policing authorities from being put into a position that they have to either join or look the other way. For instance, if they are investigating a crime, and someone higher up realigns their priorities and takes them off the case; if someone in police authority gets a threat from the outside on one of their family members for a case they are working on; if health care officials are presented with black market organs within their own system, not knowing where they came from but provided by their system...then the crime continues.
But, to take demand away, means taking profits out of the equation. By having our hands and say in the protection of the donor registry, and organ donation process, we are keeping our continually ensuring that our country is not the place to market for organs.
If this process was to be pushed through by the people, and government stahls, or decisions are slowed, then we would have to look at those that are slowing the process and ask why? Who? Why are they not protecting the people? What are they involved in?
But if we, in mass, sign donor registry cards, the message would be fairly apparent. We are tired of those in need not needlessly dying waiting for organs we can donate ourselves. We are tired of people going missing without a trace. We are tired of having criminal elements in our health care system, political system, and our trusted police authorities. By putting policies into place that help protect those in authority from being personally threatened, we have a lot more good guys on our side of the fence. And, the bad guys are not infiltrating positions of power. Sometimes we have to help them do their job.
Those in the black trade would move to other countries, less organized, and less of a hassle.
The key to killing profits, is to do our part to make sure there is no demand. Without demand they can't sell. And, they can't make a profit. No one works for free.
Fortunately, organ donorship is something we can do something about. Sex trade, Drug trade...not so easy.
This is just my personal opinion. I am not an expert in the topic.