Literally filed or overcrowded with drones: Never, what would they be doing?
This reminds me of a classical line: "there is a world market for maybe five computers"
- Surveillance & Patrolling (public, intelligence services, military and private)
- Transport (think of those Pizza delivery SLAs going down to 10 minutes or Amazon)
- Emergency Services Support (Search & Rescue, Disaster Evaluation & Reconnaissance, etc.)
- Gardening, Crop Spray-ing, etc.
- IT Infrastructure Support for massive events (think wireless at a concert)
- Scientific measurements for weather/pollution/etc.