Well Silicon Valley does need America's consumer market, legal infrastructure, security, and skilled work force. The author of the article is not wrong in that

Well Silicon Valley does need America's consumer market, legal infrastructure, security, and skilled work force. The author of the article is not wrong in that sense. How successful would your start up be if you had to waste time worrying about your clients breaching contracts (with no legal resource for you to recover the money owed to you)? Or waste time worrying about populist policies destroying your business model? Or figuring out ways to cope with extortionary behavior from local organized crime/and or government? These are all legitimate problems businesses in other parts of the world face (though not in places like Germany or UK). Even the markets developed countries like Germany are not as large as the US consumer market. Having close, easy access to the biggest consumer market in the world has its perks.