Manned aircraft still way cheaper at scale. You can do whole counties in a day. Fly it 2-3 times a year and sell it to hundreds/ thousands of customers. Unless

Manned aircraft still way cheaper at scale. You can do whole counties in a day. Fly it 2-3 times a year and sell it to hundreds/ thousands of customers. Unless the property is ridiculously expensive, don't expect any one to commission a flight for it.