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What exactly is an entrepreneur?:
In a new paper Magnus Henrekson and Tino Sanandaji argue that the number of self-made billionaires a country produces provides a much better measure of its entrepreneurial vigour than the number of small businesses. The authors studied Forbes’s annual list of billionaires over the past 20 years and produced a list of 996 self-made billionaires (ie, people who had made their own money by founding innovative companies as opposed to people who inherited money or who had extracted it from the state). They demonstrated that “entrepreneur density” correlates with many things that we intuitively associate with economic dynamism, such as the number of patents per head or the flow of venture capital.
They also demonstrated it correlating negatively with rates of small-business owners, self-employment and startups—in other words that many traditional measures are about as misleading as you can get.
Countries with a lot of small companies are often stagnant. People start their own businesses because there are no other opportunities. Those businesses stay small because they are doing exactly what other small businesses do. The same is true of industries. In America industries that produce more entrepreneur billionaires tend to have a lower share of employees working in firms with less than 20 employees.
This makes sense: successful entrepreneurs inevitably destroy their smaller rivals as they take their companies to scale. Walmart became the world’s largest retailer by replacing thousands of Mom-and-Pop shops. Amazon became a bookselling giant by driving thousands of booksellers out of business. By sponsoring new ways of doing things entrepreneurs create new organisations that employ thousands of people including people who might otherwise have been self-employed. In other words, they simultaneously boost the economy’s overall productivity and reduce its level of self-employment.