No, I get that. Adapt or die, and that's true.
But it does matter that this is pretty fundamental change that changes the nature of the tavern business. It's like saying that the "tavern" can still stay in bidness but they can't serve beer anymore. Call it what you want, and maybe the building will still be a business of some kind, but it won't be a tavern.
THere was a time there was no such thing as a cigarette, and truth be told it wasn't all that long ago. Taverns existed long before the cigarette and will exist long after this ban.
Banning smoking in a tavern does not end the tavern business... its foolish to make such statements. In fact Tobacco didn't even exist in europe, and wasn't brought there until Columbus.
The Cigar really didn't gain popularity until the 1800s and the cigarette itself didn't exist until the 1800s etc etc... Taverns existed long before tobacco, and will continue to exist long after this ban. Its patently ignorant to say taverns are defined by smoking.