You probably are the one holding the bag. Prices are exploding because mortgage rates are being held below the rate of inflation. In this scenario, it makes sense to borrow as much money as you possibly can and buy hard assets with it, because your mortgage is essentially a transfer of wealth from the bank to you. Normally banks would be the bagholders in this scenario, but because of securitization, they just package off the mortgage and sell it on the MBS market. The biggest buyer of MBS's lately has been the Fed, which they do with money newly injected into the market. The effect of this money creation is the inflation we've seen over the last 2 years, so effectively this has been a transfer of wealth from savers and anyone whose income is denominated in cash, to buyers and to some extent sellers of homes.