Earlier quoted context omitted.
Europe is a big place; fjords have little to share with Algarve or Greek isles as far as climate goes.
Everything north of the alps is pretty gloomy, especially compared to North America
Sophia Antipolis (https://en.wikipedia.org/wiki/Sophia_Antipolis) is definitely an attempt to build a Silicon Valley in Europe but why did it not work? It was pushed and funded extensively by the government, it doesn't feel natural after all. In the Bay Area, the government was there too, no delusion but private sector has shaped California for about 150 years. What always stroke me is the urban planning: the houses and roads are big and pretty even if they look old sometimes. It might be part of the Californian dream: a big job, a big car, a big home, etc. Also the administration and mentality is different, more Republican perhaps?