At the start of the 1970s, about 3 per cent of US households started a new business every year. By the end of the '80s, that rate had increased by a third. By the end of the '90s, it had risen again, by almost a fifth, and stood near 5 per cent. Then, quite abruptly, the growth stalled - and after the Great Recession, the rate fell. If the trends of the previous 30 years had continued, America would have seen 1 million more entrepreneurs over the last decade than it actually did. For some reason it did not.
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That reason, an economist for the World Bank postulates in a new research paper, is wrapped up with the faltering health of America's middle class in the 2000s. Camilo Mondragón-Vélez, a senior research officer at the World Bank Group's International Finance Corporation, analysed two long-running data sets and calculated the 1 million missing entrepreneurs figure.
He traces it largely to families earning between $41,000 and $151,000 in today's dollars (a very broad definition of middle class, it should be noted), who constitute 60 per cent of all business-owning households, but who flatlined on their rates of new business ownership after decades of growth.