>>4504362 (pb)
So the price of physical metal silver is kept down by the creation of "paper", i.e. close substitutes for some purposes.
That is not illegal. To prohibit it, you would have to do something unnatural like not allowing contracts where silver was an underlying asset.
It's not some banker scam, but the nature of voluntary contracts and the ingenuity of those who enter into them, that allows this to continue. And if it's been going on for decades, there's no reason to think it will stop in the foreseeable future.
Is it too much leverage? The clearing corporations don't think so, and they're in business to make money. Are they taking unfair advantage of limited liability status in their role as clearing corps? Well limited liability makes the world go round in lots of ways, not just that.