Logically it is the same question.
Before Helicopters....people were transported by Ground Ambulances.
When Helicopters are not available....people are transported by Ground Ambulances.
Same in Police work and SAR....in the absence of Helicopters other assets are used.
Comparative efficiencies is the argument and whether one method undo's the need for another or are they complement one another and perhaps produce a much better overall product for the cost?