Because it's practically illegal to do anything of the sort with drones now, let alone strap explosives to one.
For example in the UK flying a drone requires registration.
Though I suppose I could make like most Brits seem to and bend the rules a little. The ailing police force certainly weren't around to help me when I needed it so I doubt they'd be interested in me fucking about with a drone in a field (sans pyrotechnics of course, I'm not stupid).
It's easy to get licenced to fly drones. Sure, there are rules, but if as you claim you can build a business that will make you rich in 6 months, those rules are not an obstacle at all.
Now one could ask: if you don't manage to pass that point, could it be that you underestimated the complexity of building such a business? :-)
For example in the UK flying a drone requires registration.
Though I suppose I could make like most Brits seem to and bend the rules a little. The ailing police force certainly weren't around to help me when I needed it so I doubt they'd be interested in me fucking about with a drone in a field (sans pyrotechnics of course, I'm not stupid).