Back to the pizza delivery guy.................
There are man made laws that govern where, how, and who, can carry a firearm. Sometimes a condition of employment also governs those things. However, there is a higher "law" that is always in effect.... the law of survival. The individual has to decide which "laws" or "conditions" they will abide by.
That said then it becomes up to the idividual if they will leave their gun home in order to earn a living or abide by man made law and chance becoming a nonsurvivor in the process. The solution, as I understand it, is to not take a job that puts me in danger without the ability to defend myself. Or to keep the ability to defend myself but put my chance to earn a living or stay out of prison in jeapordy. As far as I'm concerned... for me as an individual.... if my life is in direct and personal immediate dire danger from a criminal I just might temporarily ignore man made law..... or if an employer expects me to put my life on the line without allowing me the means to defend myself the employer can take the job and insert it into their own dark and smelly place. There are other jobs out there that are not inherently dangerous. However, that is just how I have decided to deal with that and that decision may not be an acceptable solution for someone else since they might rather face the criminal unarmed than face possible imprisonment or they might be faced with hungry kids. I'm definately not advocating breaking man made law nor am I suggesting letting kids go hungry......... I'm pointing out that in this area, just like every other area in life, the individual affected is the one who has to make an intelligent decision.
So, having said all that...... the pizza delivery guy who put 15 rounds into an alleged assailant apparently chose to put himself in danger of imprisonment (even if the guy was carrying legally if it isn't a justifiable shooting prison still looms as a probable consequence) and put his job in jeapordy in order to obey the law of survival. Therefore he has to face the consequences of that decision... the good thing is.... he is still alive to face those consequences.