In Europe is much more bureaucracy, and much more welfare economy, and in US is more free market. This is exact reason for European entrepreneurs, to start bu

In Europe is much more bureaucracy, and much more welfare economy, and in US is more free market. This is exact reason for European entrepreneurs, to start business in Europe, because easier to gather smart people, but, at some scale, become much more convenient to run business in US, so an some growth step, business owners have to consider US more freedom against strict EU regulations.