skiingman,
you are fully right, I didn't mention the scale effect of a "real" industrial production. But then - it might cost a hundredth, meaning a third of the value of a car? You won't get it down much further, because of huge developing and testing efforts of such equipment. Speaking rather about a billion to be amortized, not single-digit-millions.
And I share your view on GA...
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Anyway, internationally agreed law foresees that there are participants of the land of the manufacturer of the airframe, the engine(s), the land in which the incident occurred and the land where the aircraft was registered. Nothing unusual here.