After declaring public calamity in the state of São Paulo due to the Covid-19 pandemic, Governor João Doria made a clear appeal to the population for the coming weeks and months: “Please, only buy enough goods for you and your family.” Despite news of agreements between the government, suppliers, and supermarket associations to ensure there will be no supply shortages in the state, more and more reports of empty supermarket shelves are cropping up around the state capital. As we reported in our March 20 Tech Roundup, the crisis has already hit e-commerce, with the biggest supermarket chains in Brazil unable...