You'll never see a headline that says "Restaurant owner says "business exploded" since banning guns."
You won't even see the above headline in heavily blue, anti-gun states. On the other hand, being pro-gun is good for business.
H/T to Saysuncle
“The Second Amendment protects an individual right to possess a firearm unconnected with service in a militia, and to use that arm for traditionally lawful purposes, such as self-defense within the home.” Heller v. D.C. - June 26, 2008