People don't realize the value of being the assembler of the final product.

In the early days of Windows ( a piece of crap that added "blue screen of death" and "3-finger salute" to the popular lexicon), there were many "suppliers" of leading-edge software that ran under Windows.  One by one, Microsoft put them out of business by incorporating their functionality in Windows.  They were in a position to decide who survived.

When Magna, a successful auto parts supplier, wanted to buy Opel and become a mainframe assembler, they had to back down or else lose their customers for their parts business.

Like the nail that sticks up, Bombardier has just been hammered down.  Without an airframe, Airbus will eventually render Bombardier a parts supplier or worse.