[solatic]

Even if the security guard is paid $200/hour, it doesn't matter. If someone puts a gun to your head, you're going to comply - nothing is worth your life. This is a large part of the reason why militaries spend much more time on psychological molding of their soldiers, because it's much, much easier to convince somebody to put themselves in the line of fire for Reasons than it is for a paycheck. The kind of security folk who actually are willing to put themselves in the line of fire for a paycheck (mercenaries) simply do not exist in the numbers needed for manning private sector security across the economy, so again, the pay is largely irrelevant.

The real purpose of security guards is to raise the cost of an attack, in terms of the number of people needed to carry out an attack. A larger attack party translates into the jackpot being divided into more payouts, and therefore the jackpot needs to be larger in order to justify the attack, not to mention the increased risks involved with coordinating a larger-scale attack (keeping opsec etc.). One security guard is easily subdued by a lone wolf attacker, or avoided. Multiple teams of roving security guards need much more coordination to subdue or avoid, without raising an alarm.

Even if you are interested in bribing a security guard, again, a single security guard doesn't provide much protection, but the more security guards on each shift, besides the amount of money needed to bribe all of them, each additional guard raises the risk of the bribe being reported and the attack failing.

Precisely because many security guards are needed for effective security, the ease of training new security guards, and the ease of hiring new ones, are security guard wages relatively low.