Online shopping and the Harry Potter effect

The idea that the internet is transforming our buying habits was first popularised in an article written by Chris Anderson, editor-in-chief of the technology magazine Wired, in October 2004. The article, titled “The long tail”, became a blog, a best-selling book and a marketing mantra. In other words, says Page, the extra choice available online is of little economic worth to the retailer. “Scarcity in conventional retailers might be a constraint,” he says. “But it could also be a discipline, representing an economically optimal inventory.”