Where is all the stuff that we use in our day to day lives going to come from while the economy is 'paused'? Who is going to make the food, distribute the food, sell the food, drive the trucks, etc?
There are two sides of our society; production and consumption. If we aren't producing, how are we continuing to consume?
Well, there's inventory of various essential goods in a variety of places, and all the essential services you note, as well as power, plumbing, etc.
Instead of going to a restaurant, I make a sandwich, instead of buying a new shirt, etc. GDP has indeed dropped, and some people have no cash flow (fixable), but I'm not seeing physical (excluding the abstraction of the banking system) reasons why this can't be sustained for months if necessary.
There are two sides of our society; production and consumption. If we aren't producing, how are we continuing to consume?