Whilst that is quite true, there is also the political aspect, little Timmy dies en route because there isn't a helicopter, isn't as palatable as the same result whilst en route IN the helicopter. Same with the old bill but slightly harder to justify, hence the ability to open the cracks and provide alternative solutions, be they fixed wing or drones. Both offer a limited solution, but will claim to be a viable and cheaper alternative. Can you seriously imagine no rotary over London? No, but over an outlying county? Absolutely.