Answer:
First mover advantage
Explanation:
First-mover advantage is defined as the advantage or benefit gained through the initial occupant of the segment of market. The benefit or advantage might be gained through the leadership of technological or prior purchase of resources.
So, in this case, Airbus who developed the jet at the cost of $15 billion, and quickly the company obtain the contract which is expected to be ordered in next 20 years. Therefore, the Airbus benefits from the first mover benefit.