As an actual physical commodity, more supply is actually brought to plug as price increases. One might argue the supply of gold is bound since ways from a physical object, but the reality is that the available supply is dependent on mining companies’ spending money to extract gold out of the ground. Similar to oil, as price increases, more and better firms invested in mining and extracting gold from places which weren’t profitable at less expensive prices. This is an attribute of commodities which needs with regard to kept in your mind when investing