Leasing is a contractual agreement subject to certain terms and conditions. I would assume that central to the agreement is that the borrower has a legal obligation to return the gold at the end of a specified period of time, as well as, under any other extenuating circumstances that might occur during the agreed upon terms. Therefore you would at best be only delaying a price increase in the underlying commodity, if that was what the borrower was attempting to avoid in the first place. The lender would eventually, as they say have to,"Pay the piper."