Tremendously well-said!

"If you're a libertarian and believe that the free market is inherently fair, then people not choosing to work at the wage you're offering is the very definition of you failing to meet demand."

No duh! You are very gifted - everything you've said is absolutely true and right-on. I think it is very difficult for this type of employer to heed your guidance, because they have the emotional maturity and ability of snails.