> to some „culture“ that randomly formed and which did not happen in europe

Because when WWII ended and Europe was rebuilding, in some low-key corner of the West Coast of the US, some military contractors were trying to figure out what would their next projects look like (and getting more money from the US Gov. to fight the Russians, of course)

Then these guys became the best (read, selling more) in one thing called semiconductors then the best at this other new thing that was called computers and that's how it went.

And I might add that being the junction of tech and (accidentally) some weird hippie corner of the US might have helped in some aspects.