Because alchol sellers aren't widely considered as flat out evil as cigarette makers, meaning that they can still realistically grease the wheels of power with dump trucks full of money.
I'm sure cigarette makers would love to the do the same thing, but no politician is dumb enough to risk taking "campaign contributions" from people who are widely considered to be the scum of the earth. Alcohol makers still have a level of respectability that lets them get away with it.
I can think of local brewers and stuff that do it as a hobby, and just happened to take a chance to start doing it professionally. I don't think these people are evil at all, they're just trying to have fun with their interest (albeit one that isn't great for your health) and make some money while doing so.
Can't really say the same thing for tobacco. I'm sure in some places there may be a similar kind thing though, so that's just a thought from my local perspective. All I know are big corporate brands for smoking.
Edit: just to add onto this... I absolutely think we should include ingredients, nutritional facts, and warnings on alcohol still. Just my 2 cents about one being more evil than the other by a landslide.
Very true. I was just comparing corporations to corporations. Craft breweries are certainly not evil; they're the equivalent of local businesses for the most part.