The law of jante is slightly esoteric and so everyone feels the need to bring it up when the Scandinavian tech scene is discussed, just to show they are in the know. Nobody in a position to do a startup gives a shit about the law of jante. Neither is an investor going to turn away from a pile of money while muttering under his breath 'who does he think he is?'
Of all the people I know that could have done a startup, the main reason they did not is because the alternative is so good. Everyone in my class (5 years of computer engineering) who bothered with early interviews, had a job lined up 9 months prior to graduation. Even my mediocre classmates were being courted by multiple companies. Starting salary in Oslo is $80k, about 60k more than what a typical student lives off in Norway.