Suppose, just suppose, that in some lab somewhere there is a pill. This pill will do two things. It will eliminate PD symptoms by unblocking some hypothetical dopamine relationship. The other effect - from the same source - is it will eliminate the ability to get high from cocaine. The first effect eliminates a one billion dollar market controlled by BigPharma. But the other eliminates a 500 billion dollar market controlled by the most powerful men on the planet. That pill will never see the light of day. Hypothetically of course. (Hmmm. Odd. Don't see many black helicopters around here....)