Again, you are thinking about statistics. I defy anyone who when faced with this type of stressful situation to think about statistical probability. This is a trained response. The average joe is not trained yet, we are not inundated with armed robberies. Why?
Do you think the police actually provide a serious deterrent? Do you think the legal system prevents the majority of crimes by harsh penalties? Do you think the would be criminals decide to avoid possible CCW holders?
What keeps armed robbery from being a significant employment opportunity for the 47%? Do you REALLY believe in the basic goodness of humanity?
I have a huge problem with people who think all the distasteful functions of society should be assigned to the police or any other public office just so we can avoid taking personal responsibility.
Eh? I'm an NRA member, and licensed CC in Texas. I think use of your firearm should be extremely judiciously applied. I don't have a significant problem with what the guy in the OP did, but also think it might have been adding risk to the situation. I wasn't there, it's a judgment call. Things can definitely go wrong either way.
The bandit described sounds like a simple coward who was only motivated by $, not violence. I'd hate to see any citizen hurt/killed trying to do the police's duty, when the guy was bound to get caught sooner or later. 30+ robberies and no injuries? I'm not sure this guy was Clyde Barrow by any stretch.
Sounds like you're asking philosophical rather than practical questions. What keeps armed robbery from being employment for the "47%"? Lotwut? 47% of America is something like 150 million people. Armed robbers are spectacularly rare in the big picture. Yes, most people AREN'T violent criminals, regardless of being poor.
Anyway, back to point, it's not an abdication of personal responsibility to make a judgment call either way in a case like this. I can tell you that if the store was crowded, and you couldn't get a clean shot, or if you had a lot of bystanders next to/partially in front of you, then drawing down on the guy would have been an unreasonably risky move. It sounds like that wasn't the case though. Dead to rights = why not? Good on him.
At the same time, Autozone and any other business has the right not to accept that as a policy. It's basically cheaper and safer to just give the perp the $ (small in the big picture anyway), and let them get caught. Armed robbers are overwhelmingly morons, and getting caught is nearly inevitable. I also don't have the highest degree of confidence in the average person's ability to handle their firearm properly. Go to the range and watch people handling their typical Glock 17, .357 revolver, etc. I'd feel confidence in maybe 30% of them in any similar situation. But if you can't draw and calmly put a cluster in center mass at the range you engage, you shouldn't draw. Any many just can't.