A ‘Grocery’ Christmas Carol: The Ghost of Supermarkets Future explores the extraordinary transformation from American Supermarts Past – including the meteoric rise over the past 20 years of national / discount grocers Walmart, Target, Costco, Amazon, Aldi, and Dollar General – to Supermarkets Present. It reviews the importance of scale, grocery M&A and regulatory attempts to curtail it, as well as the potential consequences of these dynamics in alternative versions of Supermarkets Future.