The problem with fully electric airliners is physics: to achieve useful range you either need batteries with energy density that seems unfeasible or some sort of power beaming infrastructure which has its own set of enormous challenges. So if Western turbofan manufacturers' moat lasts until electric aviation is ubiquitous, they can be very, very happy.

(Now sure, you can substitute electric aircraft with open rotor jet engines which require different institutional knowledge to modern high bypass turbofans, but they're still really sensitive to how the blades are manufactured)