Welcome to JIT supply chains! You'd better be sure to have a month's worth of food supply at home.
From a country's POV, the stability of food production and delivery to stores is critical. Fortunately, both Italy and Wuhan prove that it can be maintained during lockdown.
I know our grocery stores only average about 1 day worth of supplies in stock, plus 1 day of food at home, then it all kind of goes to shit?