A few observations: The US has the laws and infrastructure that make starting a company easy like LLCs/Incs, equity agreements & tax advantages, weak labor laws

A few observations: The US has the laws and infrastructure that make starting a company easy like LLCs/Incs, equity agreements & tax advantages, weak labor laws, cloud compute, accounting styles, VC money, etc. On top of that you are already in a huge uniform wealthy market with 0 need to localise on day 1. Europe (I have heard) has difficult laws around equity agreements and thus it is hard to incentivize employees or do the correct accounting. Also there is a string entrepreneurship culture in the US. Also, US poaches top talent. Of course it is possible to do a great tech startup in Euro/UK. However, after working at a European company I can say that culture is VERY different, and that is OK! However, it makes building or running a company hard