After having watched what was done to the tobacco industry, I think it will go through.
I still think it is absolutely asinine and should not be permitted, but who am I, other than the poor schlub that will wind up paying for it, because the beer companies will just pass the costs along to the consumer, just like the tobacco companies did.
And the small retailers? They'll just be collateral damage because they will be bankrupted and have to close their doors.
One important difference is that the tobacco companies were purposely deceitful about the effects of tobacco. There was a substantial body of evidence that they engaged in a conspiracy to keep the public from learning the truth.
The case of alcohol is totally different, AFAIK. Brewers have not been shown to cover up the harmful effects of overindulgence. And there have been a number of studies to show, for most people, alcohol consumed in moderate quantities can have a beneficial effect.
But, in any case, given the vast literature on the pre-disposition of Native Americans to alcoholism I think it can be argued that there is a "willing assumption of risk" by a tribe member consuming alcohol in the first place. I would think the same thing for anybody who started smoking in the last 20 years or so.