You've literally stumbled into the answer yourself here. > Drones have already long had the capability to do all this, lift and endurance, auto flying and navi

You've literally stumbled into the answer yourself here. > Drones have already long had the capability to do all this, lift and endurance, auto flying and navigation, GPS, even cameras and some autonomous visual recognition. If that's the case (which it is, you're right), then why are we not already delivering medicine to remote areas with drones?