Banning smoking will lower my restaurant bill. Lower labor, maintenance and cleaning will save me money.Then many bars would already ban smoking. The problem is that overhead (rent or mortgage/taxes, lights, heat, licensing) is not affected by the number of patrons. Less patrons means that each one either absorbs a greater share, or the owner does.
-Eric
The costs might be lower but as another poster pointed out the customers will drop off. That is why a state wide ban is needed so all restaurants are smoke free. That way the smokers will still eat at the same restaurants.