If the two-engine planes are such a risk, how the hell have they got air safety certificates?
Unless, due to scheduling issues they intentionally want to run the plane with broken engines, I don't see any good reason why it needs four engines.
Fair enough, buy American - especially when the A380 is more expensive. But given that it is a completely custom fit out, I don't see why the smaller size of a 787 should be a problem either.
The 787 would make it practical / possible to fly into smaller airfields too. And be much, much cheaper - to purchase and run.