When people talk about drone height, they often mix up two different things: What the drone can do (motors, propellers, battery, weight, and how thin the air is). What you are allowed to do (flying rules and restricted airspace). A drone might be able to climb very high, but that does not mean you should do it. For most real jobs—surveying, inspection, farming, security, or search work—the goal is not to fly as high as possible. The goal is to fly high enough to do the task clearly and safely.