Maybe Uber isn’t that innovative after all. A new study from the McKinsey Global Institute (MGI), finds that the “gig” economy model popularized by Uber has a lot in common with the economies of poor countries today, as well as the US and Europe before the Industrial Revolution. Uber and other “gig” companies like Lyft and TaskRabbit hire their workers as independent contractors rather than full employees. These jobs comes with a lot of flexibility—workers…