> The fact that we haven't had more drone terror attacks says more about the technological slowness of terrorists than its infeasibility.
Also motivation and incentives. The reason we haven't seen many drone attacks on civilians is that it is far more lucrative to get civilians to buy your product than to kill them, and the companies that actually have the resources to mount a credible drone attack are making a lot more money doing the former.
Terrorism in general has always been far more overhyped than actually a problem - the median number of terrorist deaths per year in the U.S. from 1970-2020 is 4, making your odds of being killed in a terrorist attack significantly lower than being struck by lightning. And the reason is simply that it's deeply irrational. What do you have to gain from killing a random stranger?
non-terror life opportunity
vs
terror life opportunity
Why you tend to have domestic terror in places with bad economies (and high economic equality). And why beliefs often drive it (religious, political, etc.), by adding righteousness to the terror side of the equation.
But requisite minimum skillset is also a consideration, and that's where drones are dangerous.
We're talking (play videogames and some soldering) instead of (chemistry or biology).
The median is more relevant than the mean simply because it's less sensitive to outliers. 9/11 was an outlier; 85% of all U.S. terrorist deaths in the last 50 years happened on that one day.
And eventually terrorists catch up. (Probably after the Russia-Ukraine war ends and some skilled people from both sides are unemployed)
It's infeasible to blanket every inch of civilian space with kinetic or EW anti-drone systems.
They may become commonplace at mass events (concerts, parades, gatherings, etc.) but will never cover all soft targets.
And unlike the nearest analog in chemical weapons, drones are dual-use, stable, and easily assembled.
The only reason the 1995 Tokyo Subway attacks [0] weren't worse was because of ineptitude.
Someone could be a quarter as intelligent and successfully fly an FPV drone into a target.
[0] https://en.m.wikipedia.org/wiki/Tokyo_subway_sarin_attack#Ch...