I think we are barely scratching surface of what could be done with drones. While technology now still imposes some restrictions, tomorrow sky is the limit.

For example construction. Right now there is a lot of heavy machinery at a construction site and humans to operate them, in future significant part of that could be replaced with drones. While it vastly more expensive to develop a drone compared to training a human and building machinery, drones have nearly infinite scaling[0].

Construction drones could also help address extraordinarily high development costs (California I am looking at you).

[0] If you make one drone work, getting a million drones is relatively easy, compared to training a million humans if you trained one.