One does not survive in an economy by closing one's doors to business, and each one of these industries now has a secondary, or in many cases primary home outside the US in a country more accomodating to the requirements of the industry.
http://news.bbc.co.uk/1/hi/world/americas/7741049.stm - US Dominance Set to Wane
http://news.bbc.co.uk/1/hi/world/americas/7741241.stm - US Global Trends Key Report