Or, just like the new T-7A program: sell below cost, because you expect to make your profit in the long-term support contract.
No different than my new HP printer. Printer was $50.
Their replacement cartridges? $50 for Black, $75 for color....Wait...that means it’s cheaper to buy a new printer AND cartridge...than just a cartridge....
(Fortunately, there are aftermarket ones that work great for $32).
I’d bet Boeing is banking on the long haul for parts and services.