A recent article in Aviation Week & Space Technology states
"Although Boeing and ANA gave a "list price" for the order at $6 billion, or $120 million per aircraft, industry executives in Tokyo said the true value was much lower and suggested the order was accompanied by significant discounts made possible by "buy ins" from the supply network that Boeing has stretched around the globe. Prominent on that list are Japan's three biggest aerospace manufacturers, which are collectively responsible for producing 35%(my emphasis) of the total 7E7 assembly, including most of its wing and parts of its fuselage. Spokesmen said the industrial connection was "not the reason ANA ordered."
Another quote states that 65% of the aircraft is from outside Boeing. Yet another states that large amounts of the composite work was given to particular Japanese companies because of their extensive experiance in composites from their "bullet train" manufacturing.
I am sorry but I cannot find my definitive guide that showed the worldwide breakdown of contributing companies that also include the Rolls Royce engines and France's own Dassualt for computer design systems Catia.
Boeings Seattle assembly personnel will only increase some 800 to 1200 total but 2nd and 3rd party groups, including from overseas, may well build in the area as well.
And of course the very large percentage of Asian contributors was precisely why so many A.netters predicted an initial order from that region.
If you spread the risk you can share the damage, costs - and profits in a true world wide economy.
Less sarcasm and more thought equal better understanding