I'm tempted to side-track this comment into asking how libertarianism interacts with real (or perceived) economic necessities where such necessities involve interfering with the liberty (in the case of the South) or these days the ability of people to lift themselves out of poverty but that's a different question.

I'll just agree that I can see its an appealing question but it's important, I think, that when you make or encounter an allegory you recognise both what's makes it the same and what makes it different.