Re drones. It is noticeable that while Iran, Russia and Ukraine are fielding them in numbers, for the battlefield and medium range attack, the USA is not. The USA is using $100 million planes and all the needed support, and $30 million reaper drone firing $150k hellfire missiles.
I don't think it's just a cost thing. It's volume, speed, flexibility, mobility, concealment, training, easy production , factory size, supply chain, material availability, storage, off the shelf components, massively reduced certification, reduced R&D....... did I miss anything ?
In fact ,thinking about it, with that not extensive list and the size of the US Military Industrial Complex, it's no wonder the US don't field them. If they did their defence budget could be slashed at the stroke of a pen.