Mr Smith has a real for delivery contract, not a more common contract to own for some amount of time but no clue who is on either end. As such if you buy from Mr Smith you get real goods, while from someone else you may discover that you created a short squeeze, and not actual material is available: they may have to pay you a ton of $$$ to get out of the contract, but you don't actually get anything delivered.
If you really want the actual good and not the dollars, then you should by buying contracts backed by real goods that cannot be shorted. By contrast if you just want to make money there is more money in buying the contact that is a short with no material behind it. Of course knowing when a short squeeze will happen is left as an exercise for the reader - meaning I have no idea when this plan can work out only that once in a while it does.
If you really want the actual good and not the dollars, then you should by buying contracts backed by real goods that cannot be shorted. By contrast if you just want to make money there is more money in buying the contact that is a short with no material behind it. Of course knowing when a short squeeze will happen is left as an exercise for the reader - meaning I have no idea when this plan can work out only that once in a while it does.