The issue with EU is its not one market, for funding or deploying a company of any kind. There is both no funding scale and no easy distribution scale. Same thing with any kind of lobbying you need to do to move laws to be more amenable to tech, you have to do it 20+ times. Nobody does this, which is why smart EU and UK talent migrates to the US, scales, then just uses the weight of their US business to change reality around them in the EU anwyay. For the most part.