Suppose you are hiring a babysitter for your baby. And you decide on someone who is good enough. And someone else comes and says I’m also good enough, and how come you don’t hire me instead and it isn’t fair.
Do you answer: well, I already decided?
Do you answer: because she was better?
Do you answer: I found her first?
No. You don’t answer any of those. You don’t answer at all, because the question makes no sense. The question makes no sense because the person asking why you didn’t hire her has nothing to do with you or your hiring decision. Maybe like a lav baal devarim didi ot theory. When you hire a babysitter, the only relevant decision is taking care of your baby, and no part of the decision is making things good or fair to the pool of potential hirees.
Maybe this doesn’t apply to hiring waiters in your restaraunt, or maybe it does. But it sure applies to babysitters and knesseteers.