That Target barely has any groceries, it's a small general department store. But yeah there is Trader Joe's, H-Mart, and Whole Foods. Market Basket is a bit further but more like a real grocery.
Yeah, the point is there's a wealth of options for food within a an easy hour round trip of walking (not just specifically the one Target). And a lot more if you have access to a bike. People are not going to starve to death when the alternative is walking 15 minutes to a grocery store. Let's be real. Downtown Cambridge is NOT some food desert like what exists in other parts of the US, where you could walk for hours and not reach the nearest grocery store (this is particularly prevalent in rural areas).
They can't shut down the grocery stores for long periods of time for the simple fact that people will start starving to death, which has a mortality rate strictly worse than any pandemic disease. The only retail businesses still open in the worst-struck parts of China and Italy are the grocery stores and pharmacies, because they have to be open. They are essential. Some of my relatives are Italian and they have to book a specific time slot to go to the grocery store, and that and the pharmacy/doctor/hospital are the only things they can be on the roads to do.
These options will continue to be viable unless society completely collapses, which doesn't seem in the cards here.
