>There's many factors that make Europe less competitive than the US: small fractured markets, low salaries, high cost of living relative to wages, Brexit costs, fear of being labeled a failure, working to live, focus on worker's rights, stability, and pensions, general risk aversion etc.
In some Asian countries there is a thriving startup scene, so cost of living and working to live are not determining factors.
I would say the determining factor is the mentality. Europe focuses much on safety nets, welfare. Europeans learned that they should be content with earning a wage that allows them to live while working 8 hours a day, with enough time off, decent amount of holidays, a good work-life balance. They want state backed pensions funds, free or cheap healthcare, free education.
There are less Europeans willing to work on weekends than there are Americans and there are less Europeans working more than one job than there are Americans.
So Europeans focus more on living their lives while Americans focus more on Entrepreneurship. Their respective societies, cultures, history kind of teach them to behave that way.
It's not that a change in mentality is impossible, but it won't happen overnight.