The central banks aren't interested in what works, they're interested in their own prestige. And they are so deep into it already and it didn't work. They will increase the medicine. Eventually, they'll buy all the government bonds; they'll buy all the corporate bonds, all the shares outstanding. Afterwards the housing market goes down, they'll buy all the homes and then the government will own everything.
The governments in my view, with their agents the Federal Reserve and other central banks and with the treasury department, they will do anything not to let asset prices go down. If the stock markets go down, I'm convinced all the central banks will buy stocks. All of them.
