A project manager who arrives on site expecting a progress report may find a folder of uneven phone photographs, handwritten observations, and a survey that covered only the accessible parts of the property.
More images alone will not correct that problem. commercial drones work as part of a measurement system that includes the aircraft, sensor, flight plan, positioning method, processing software, and human review.
Planned properly, a drone can record terrain, structures, equipment, and construction progress while reducing the need to send people into exposed or difficult locations. The useful output is an organized, repeatable record rather than a collection of attractive aerial views.