I can only talk about my personal (US based) experience. This includes many US based startups,some VC startups, senior leadership in a large tech company, and a

I can only talk about my personal (US based) experience. This includes many US based startups,some VC startups, senior leadership in a large tech company, and a senior executive position in another large tech company. I have also worked with, and built, tech organizations in multiple EU countries, and have been involved in the technical due diligence and acquisition discussions with several EU companies. I admit that my experience is about 6 years old, as I am no longer in the tech industry, and I do not know what has changed during this time. Money: There is more money for US startups. Investors (US and EU) want to invest in US based startups, not EU startups. US investors are willing to risk more money and take greater risk. EU startups that gain traction will attract US companies in that they provide a good way to extend their market to the EU, not as much for their innovations. Tech entrepreneurs (US or EU) want to work in the US if they can, because that is where the excitement and risk taking is and where the money can be made. Teams: Building and managing EU tech teams is very different than US tech teams. EU teams need a lot more emotional hand holding, and EU engineers are far more salary oriented than equity oriented. It is far more difficult to motivate them to go above and beyond - the "we need to get this fix or feature in tonight so we can deploy n the morning" simply will not get done if it is already 5pm. Firing EU workers is much more difficult. There are a lot more regulations for EU teams, in order to "protect" them, and that results in the teams being more "lifestyle" teams rather than "innovation teams". EU teams get paid a lot less than their US counterparts. Failure: Good failure is not a problem in the US, it can actually be a badge of honor. EU is very risk averse, and people avoid failure. There are of course exceptions all around, but the weight of these observations and experiences are in favor of US teams. This is in no way saying it is better to live in the US, there are a lot of things about the EU that are more attractive than the US, and I would probably have a better lifestyle living in Europe now that I am no longer working. But innovation and money is not one of them.