There have been a number of weird reports about PD and the hunt for a cure. Amgen, of course. Years of insisting it was all about ldopa when it was known otherwise. Olanow's patent grab on mucuna that serves as a fine lid on further research. Olanow's resignation from a top position at the same time as the Mother Jones piece on the $3M received from the industry his research was supporting. And, as the "Death in Edmonds" thread revealed, a retraction of a paper that would be ludicrous were it not so sinister.
So what the heck is going on? Here is a theory for the more paranoid of you. You know who you are. Don't we?
PD is intimately connected to dopamine circuitry. That is, in turn, integral to the reward system of the brain. Sex. Gambling. Cocaine. All work through the reward system.
What if it is known that anything that fixes PD will also fix the damaged circuitry that causes people to engage in those other activities? We have pondered the huge sums we generate for BigPharma but that is a speck on the planet compared to those others. If that is true, we will never see a cure my friends.