banks are boycotting marijuana? that's funny, since they'll use their actions as defending the moral highground.. could it be that they have buddies in big pharma that don't want legal marijuana to be around?
It's not so much big pharma as it is the drug wars are extremely lucrative. Price of pot will go down as it legalizes, makes the Mexican cartels lose money, makes the enforcement agencies less money, makes banks like HSBC and others who wash money back into the system from Latin America and elsewhere a lot less money.
It's not even all about the pot, a lot of countries are throwing in the towel on drug criminalization, and the establishment definitely does not want that. The cartels bribe and extort and have a lot of power. The drug interdiction via military is of course a cash cow. Historically these two eventually partner up with black ops and connected politicians and bankers, all generated by maintaining the drug prohibition. Without it they would all have to find some other way to make money.
Once people see that the world didn't end in Colorado and Washington, they will start asking deeper questions about the legitimacy of the drug war.