“Supermarkets have bulked up. These days they’re retail superpowers who make money not just when we eat or drink but increasingly when we fill the petrol tank, play pokies or buy a hammer from the local hardware – and they’re quietly stalking pharmacies, newsagents and florists. Coles and Woolworth’s sell 70 percent of the dry groceries and half the fresh food that Australians consume – among the highest concentrations of market power in the developed world”…