I mean, it's the same with those CATS sytstems in canada for TB2. Why bother when there is already supply chain.
Great Britain could make one too, but then they have to make new factories for all the electronics and the motor.
Why bother when a Nato ally, has already a supply chain.
TB2 is cheap and has no secret mechanics, or something like that, its a basic drone, when swarming it can do heavy damage for the enemy