^^^
Come on, how many more people are going to smoke weed just because it's legalized? Not that many, they already did this in Amsterdam and the amount of people who smoked didn't climb that much. I think most of the people who would be smoking it already are, regardless of the legal status.
My point is that less people aren't going to drink and smoke (cigarettes) if weed is legalized (or at least not THAT much), everyone who likes to drink will continue drinking and the smokers will continue smoking. People will continue to be drawn to alcohol even if there is another (safer) intoxicant they could be using.
I'm not disputing that, but it's a legitimate concern for big business. These guys control the market on vices. Budweiser had how many Super Bowl commercials the other night? 10? These guys don't losing ANY market share or seeing their profits dip at all.
Now imagine that they have to compete with marijuana which starts becoming sold in gas stations, pharmacies, etc. (assuming full legalization).
You and I can't truly comprehend how these people think. To us, legalizing marijuana doesn't seem like a problem or that it would cause these ultra rich guys much harm. But when you have complete power and dominance you don't want to give it up.
It's like Big Brother in 1984. They don't just want to control the populace. They want to control everything, including their minds. They don't just lock the guy up and kill him. They lock him up and work on him until he actually believes in The Party and then years later they get rid of him.
And also, I don't believe in this idea that "everyone who wants to do marijuana already does marijuana." Yeah, I don't see an explosion of pot users if it gets legalized either. Still, a bunch of people don't bother with pot because it isn't extremely accessible (as in going down to the store and buying it accessible) and it does carry risk because of current laws. The suit on Wall Street doesn't toke because he doesn't want to have his image tarnished if his bosses find out. Joe Blow at the widget factory doesn't smoke because he doesn't want to get randomly piss tested and lose his job. And believe it or not, good weed isn't magically available on every corner if you don't live in a major population center. I live in a decent sized city and you can't find shit but shake and nasty ass gutter weed. Better pot is available, but not 24/7 and you have to jump through hoops (and pay an obscene amount) to get it.
If MJ gets legalized then it's highly accessible and people can blow their money on it easily. That means they spend less money on other shit. Like alcohol. Would it absolutely kill the beer industry? Of course not. Would it have a noticeable affect? Yes. And for the corporate bigwigs who run things in this country that's just unacceptable.
And of course, it's also a control issue. If the government legalizes weed then they can't lock people up, stomp all over their rights and freedoms, etc. and so on.