I think prices send important signals in your economy, and you want people to invest and to take decisions. You want to let the price system work. There are situations where, on a temporary basis, governments need to intervene to relieve extreme hardship, but these measures can be very expensive for governments and can destroy the economy. From a fiscal perspective, the cost simply may not be worth the benefit. Ultimately, they're not going to promote the efficiency and strong functioning you need for your economy.
Yes, the IMF's advice is that when you're in a moment of intense pressure, governments may need to step in; but generally, markets are sending signals and you don't want to short-circuit those.