That's actually an interesting business idea. Pretty risky though, if you sold to both sides you'll always also sell to the losing side. The eventual winning side might not be happy about that. Also, depending on the anti air capabilities on the battlefield and the price of a drone, the losses might not make up for the profits.
> depending on the anti air capabilities on the battlefield
Yes. The use of drones by western forces has coincided with operations in which the west has had total air supremacy. The larger weaponised drones (Predator, etc) have never been flown in a hostile air environment, against a peer force that has serious anti-air. I would be reluctant to fly my drones in such an environment. Smaller throw-away drones are a different issue.
Smaller drones could deliver small payloads anti-personnel/incendiaries on eg. London or just as ransomware - a dozen expendable drones could occupy the airspace over Heathrow until some anoncoin was paid. Sky's the limit literally! Exciting times!
I'm sure both sides will stop fighting long enough for that company to send some consultants in to establish an independent airfield and command and control then sell their services. Drones still need human support.