Sin. Vox Day leans on a heavy hitter to make an obvious point.
As is so often the case, it profits those of us whose understanding of a given topic is insufficient to consider what Thomas Aquinas has to say on the subject:
To take usury for money lent is unjust in itself, because this is to sell what does not exist, and this evidently leads to inequality which is contrary to justice. …
It’s safe to assume that the same nuts not happy about America minding its own business, militarily, will dismiss the idea that selling literal nothingness is wrong.