It would work fine for sending small payloads short distances but unless you're in a hurry, it would be much easier to just send more mass by truck or train. One big benefit is having a truck or train being able to return to its origin without requiring another launch facility and also being able to travel in nearly all weather. There may be some use cases where drone gliders could airdrop payloads and return to their origin. But again, this requires very specific circumstances like good weather, a lack of roads, unavailability of av gas or jet fuel, and enough cleared space to launch a glider. I do see winches as a good way to launch lightweight fixed wing drones to reduce the amount of fuel and engine size required to deliver payloads. You'd only need to account for the fuel and power required to sustain cruise if you could winch a drone into the sky. You'd get even more distance if the drone was never intended to return like a kamikaze weapon. A small clearing in a field in Ukraine could launch cheap fixed wing kamikaze drones all day long.