Well, as was stated, being a private business, they can set the rules. Its unfortunate, but between the ATF breathing down gun dealers necks, the constant risk of law suits, and probably some idiot slipping a loaded round into a gun or two at their establishment, well, you see the results. Be nice if they could find a middle ground, but common sense is sometimes in short supply....
Reason I replied to this post is a few weeks ago, I was riding my bike, ripped jeans, dirty T shirt, and wearing a full beard. Pulled up to a backwoods gun shop, and browsed some. Guy was watching me like a hawk. I could tell I was making him nervous. Asked to see one of the new SIG P290's, and he took it out to show me, but would not let me handle it. I asked him what was wrong, didn't he trust me, and he stated "you have to have a clean record to buy a gun, you know". I smiled, and showed him my retired LEO ID. He started to apologize, but I cut him off, told him where to place his apology, and left.
Larry