Afghan Luke's global opiate business figures wrong. Reality is worse.
According to UNODC (United Nations Office on Drugs and Crime)
[Global_Afghan_Opium_Trade_2011-web.pdf, Final_Global Afghan Opiate Trade_2011-20 july 2011.pdf]
in 2009, the street value of the globally consumed illicit heroine, opium and morphine equals US$68 billion.
This is more than 15 times the amount of the 'meagre' US$4 billion mentioned in the movie.
The same document also says that the taliban earned 'only' around US$155 million from that trade in 2009, not the US$500 million that were mentioned in the movie.
"Afghan drug TRAFFICKERS" are said to have received US$2.2 billion, afghan FARMERS around US$440 million, according to the UNODC 2011 report on the global afghan opiate trade.
[Quote from the film (@00h39m):]
Drug Enforcement official: As you all know, afghanistan produces 92% of the world's heroin,
with a street value of US$4 billion.
Now, about US$500 million of that goes to the taliban to found their insurgency.
Luke: Now, what about the other US$3.5 billion, where does that go?
DEA Offic.: That goes into a hockey pool. (...) Many farmers have resorted to growing marijuana ... Afghanistan is now the world's second largest producer of hashish, after morocco; and as you also know, NATO has recently agreed to help us capture and prosecute major drug dealers, which is a good thing ...
Other Journalist: Does that mean you go after government official now?
(Laughter)
[End of Quote from film]
Hasn't alcohol prohibition in the USA 1919-1932 shown the world that prohibition benefits mostly the growth of the most reckless criminal endeavors?
Heroin itself is a very cheap substance, though prohibition makes it many times more precious than gold. All the wealth that can thusly be gained - gained by the most reckless, by those that are most inconsiderate to the lives of others - fuels corruption and murder worldwide.
Make these substances legally available (with regulation of course, like alcohol and tobacco), and most of the incentive for crime is gone.