As the saying goes @dollarvigilante : Nothing is quite so permanent as a temporary government measure.
I believe this is compounded again by the insane increase (Globally) in privately held debt, that has been encouraged to keep the banks originating assets. The more debt people hold, the more of an impact a change in the value of the currency will have. Coincidentally private debt in the US, Canada and Australia has more than tripled, which makes them overly dependent on a monetary system that is built on a house of cards.