When fixed-wing carrier delivery earns its place

Why do aircraft carriers need fixed-wing carrier-onboard-delivery aircraft?

They provide greater range and payload with lower airframe maintenance, while helicopters are the cheaper common-fleet alternative.

Fixed-wing aircraft normally carry more over longer distances and avoid the maintenance burden of a rotorcraft that must continuously generate lift. Helicopters remain attractive because navies already operate them for anti-submarine and utility work, allowing common training and support. The choice depends on whether the carrier force values maximum reach and payload enough to fund a dedicated aircraft.