Sure they do have the reserves. Just look at the reserves per person, it is the highest in the world. While many governments have lots of net debt, we have lots of net assets. We even need to invest these assets. They are willing and able to boost the economy when the need arises. During the 2009 recession, the government used the reserves temporarily to boost the economy and they can easily do it again when necessary. So don't worry, if prices do fall a lot, the government can just remove the 7 cooling measures and prices will move up again instantly.