startups%20de%20tecnologia%20e%20por%20universidades%20de%20ponta.%20A%20cultura%20de%20empreendedorismo%20do%20Vale%20do%20Sil%C3%ADcio%2C%20com%20seu%20vasto%20capital%20de%20risco%20e%20um%20ambiente%20que%20incentiva%20a%20disrup%C3%A7%C3%A3o%2C%20%C3%A9%20o%20motor%20principal.%20Gigantes%20como%20Google%20(DeepMind