Consider how the supply of any marketplace functions.
Let's say the market has 100K widgets (items that are distribution-regulated) in it as follows:
- 80K widgets owned by individuals, duly authorized or not
- 20K widgets held for sale by merchants
So what happens as a result of a variety of events?
- If the price of widgets increases, fewer of the 20K merchant-held widgets will be demanded over a given period of time, thus -- because of the importance of inventory turns, along with that of floorplan financing (see also: Floorplan Lending), in a retail business -- they will remain with the merchant, transferred (legally) to the merchant's outlet in a more demanding marketplace, or returned to the manufacturer.
- If the price of a widget in the legal marketplace increases, their price in the black market will also increase.
- If a law or other circumstance comes about outlawing widgets, some material quantity of widgets will cease to exist in the marketplace, thus reducing the quantity available from 100K to something less than 100K.
Additionally, at some point, some price, the cost-benefit calculus for buying a black market widget militates against buying one, even buying one illegally. For example, it just doesn't make sense to spend $1500 on a widget one plans to use to aid one in stealing $500 from a convenience store, particularly insofar as with each theft the risk of being caught increases, thereby forcing one to try to "hit" considerably tougher targets that also reduce the chances of successfully completing the theft. The theft act isn't the only one that works that way.
In contrast, the self-defense motive isn't hardly at all diminished by the increasing price of a widget. What is the successful defense of one's life worth? Surely more than whatever a widget costs. Moreover, regardless of the price of the widget, a self-defense motivated buyer hopes to never actually use it or have cause to use it. In that regard, the widget is much like collision or comprehensive insurance one might have on a car for which one has free and clear title. One buys it but one doesn't
want to have to file a claim.
Now if one's aim is to reduce the quantity of widgets available to criminals and would be gun abusers in a given market, reducing the supply of them achieves that. I'm sure I don't need to tell you or anyone that the fewer widgets there are in a market, the harder it gets to become the owner of one of them. That will apply to illegal and legal consumers. The harder it is to get hold of a widget, the fewer are the folks who have one, be those folks authorized or unauthorized to have one. Quite simply, the laws of supply and demand hold true for both classes of individual.