The modern retail system has worked to dazzling effect. From the 19th century, store owners emerged from small beginnings to set in train an industry that has seen some operators become nationally, even globally, dominant. Along the way, they turned retailing into an art, and then a science. Now retailers in emerging markets appear to be repeating the story all over again, except on a scale and at a speed beyond anything we have seen before. Given all of this, it can be hard for those who work...
