Give a man a fish vs. teach a man to fish
We intend to move to drones whenever they are legal, cheaper and more effective, but in the meantime Cessnas are the answer.
We have client in Livermore, CA who is actually a lawyer but has a 5 acre vineyard at his house. For $150 he can't even afford to do the research on Amazon to pick the right drone with the right sensor, let alone buy it, and operate it.
He is right next to another client, a large integrated grower with a couple thousand acres. No matter what sized drone they picked, if they were going to do a high-revisit service internally, they would have to hire someone full time to run it. We deliver to them for far less than the price of a new employee, let alone all the IT they would have to invest in.