I do not see it that way. I was born in Europe and immigrated to the US. In my mind the differences is that the US attracts more ambitious and talented people than Europe.
Don't forget friendlier business conditions both in taxes and bureaucracy.
Few of my friends that launched startups, despite being based in Europe, working from Europe, and everyone being European, incorporated in Delaware anyway.
US is simply friendlier to ambitious and greedy people. You can be so anywhere in the world but you won't get the same benefits you get in the United States.
Not sure this is true for all of Europe. The UK has remarkably little bureaucracy for companies. Costs about $15 to incorporate a company, which takes ~minutes, and then you just need to file corporation taxes + a balance sheet once a year, which is all possible to do via APIs and a (inexpensive) accounting package in a few clicks.
VAT needs to be done over around $100k/year turnover 4 times a year, but again that is possible to do in a couple of clicks via APIs and accounting packages.
And finally payroll taxes are pretty simple too, again can be done via accounting packages.
From what I know this is much less hassle than most/all US states. But some EU countries (germany especially) are horrendous, so it's not a clear picture.
US' advantage isn't only bureaucracy, it's also legal and last but not least access to capital and a giant market (US is much less dependent on export than EU).
It's a deadly combination for entrepreneurs UK can't offer.
My Middle Eastern family members always say the word around their nations of origin is, move to the US if you want to work hard and succeed, move to Germany or France if you want to chill and get free money.
