But the whole point is that the money not spent in the war on drugs would then be re-directed to control other criminal activities. I'd rather gangs go into white-collar crime than violent crimes.

The Mafia, Yakuza and the Hong Kong triads have in large measure done away from street crime and moved to more economic-oriented crimes such as buying legitimate companies and fiddling with their accounts to illegally import and sell goods, avoid taxes, peddle in corruption, gambling, ...