I'll flip sides and play devil's advocate on this. Right now, businesses are frightened and considering laying off employees as their income evaporates. The Fed wants cheap money available, but it doesn't make loans directly to businesses. Only to banks. So it lowers interest rates, and sets lower limits on what bank's need to keep in the vault, and waits.
When businesses drawn on their credit lines (some have already), the hope is banks will be able to provide that credit. Businesses will take out loans to stay in business, and those loans will be very cheap, because the banks are getting money very cheap (near 0% rates). So I think that's the target: make sure businesses can stay afloat if they go to banks asking for loans.
There's another factor Mr El-Erian brought up which is far more disturbing: stopped economies. He claims they are much harder to restart than people think. He mentioned something about supply and demand both shrinking. Companies shut down factories for lack of demand, and that creates a lack of supply for later? Something like that.