Lots of good points here.
Drone technology doesn't replace humans: fact. Operator + observer for the drone, pilot + sensor operator for the plane.
Camera cost as much as the airplane: false, but in the opposite way. I can buy a whole fleet of used C206's for the price of one high end camera or lidar. High end cameras or lidars can run over a million easily.
Satellites replacing us: for imagery, someday. 30cm pixel size is good maybe for some jobs, but many jobs want it down in the 5-15cm range, for now that's still planes. Lidar is the big deal now, and satellites aren't shooting lasers accurate to a few centimeters at us.