Not in your bubble: top university in the tax heaven EU country with some of the most US companies. Of course those grads can just stay and get FANG jobs there but not everyone comes from the NL.
>the people running succesfull startups in the US do not posess any particular brilliance
Their advantage is easier access to more capital than those in the EU. Capital helps with success even more than skills. Hence why the US has more big successful companies than Europe.