A bar would be a very different and less profitable business if they had the normal spectrum of liability other businesses have when their actions result in predictable harm. Or even if just law enforcement weren't effectively prevented from staking out bars and stopping obviously drunk patrons as soon as they started to drive.

Similarly, I also believe they'd be much less profitable if not for the rather alarming amount of addiction and abuse.

I don't think prohibition is a good idea but the fact that I'm opposed to prohibition doesn't make me blind to the externalities that bars create which are a component of their profitability.

There are lots of less than perfect things in the world. We can make them better by willing to discuss them and not being to quick to assume that any criticism is a call for a prohibition. In this case, especially, there was a comparison with other businesses and more than anything I wanted to point out that it wasn't a fair comparison because of bars unusual amount of externalized costs.