The central banks combined created less than $10 trillion. The world stock markets are worth about $100 trillion. The world bond markets probably more. Worldwide real estate is estimated at over $200 trillion. $10 trillion doesn't go far these days. The Fed couldnt even buy half the gold in the world with the £3.7 trillion it created in QE. All the gold ever mined in the world is worth about $8 trillion.
Pain Trade is higher. Too many doubters. Mnuchin just has to kill that dollar to get this market into the neverending up and to the right Bonkers Mode.