> The jets/balloon angle is interesting
Maybe I'm missing something obvious, but what about drones? Probably would have to get permits most likely, but still might be cheaper than alternatives (although balloons are hard to beat when it comes to costs, not always reusable though).
Drones (and helicopters) do have their market as well. A lot of engineering firms I saw would go with one of these two, depending on the situation.
We do use a drone when we know of a site where deforestation has taken place. The gap we're trying to fill is early detection of forest intervention, so that we can alert appropriate agencies (who are generally under-resourced) and get an inspection to take place while activity is ongoing.