Animal populations aren’t growing at exponential rates. The future scale of drones and autonomous airborne vehicles is going to be huge. The growing possibility of midairs with drones is more significant than bird strikes or deer on a runway. Hobbyist drone pilots are going to lose the safety battle. Just as you can’t drive however you want on public roads, class G airspace is going to resemble class A airspace. [1]
[1] https://en.wikipedia.org/wiki/Airspace_class_(United_States)