Is it possible that some not so wise folks left large amounts of btc on excahanges that had risen in value 100x from when they'ed been transferred to the silk road wallet?

Also, what do you know of the offline blackmarket volume of cocaine, heroine, meth? How does it compare to the (self reported) volume on darknet markets? Is it even notable in comparison? Why do you think cartels don't run their own dark markets? Because they're idiots?