Not just wage disparities, but also time / location. Quickly going through CCTV footage from a ride to catch "unusual things" takes much less time than driving

Not just wage disparities, but also time / location. Quickly going through CCTV footage from a ride to catch "unusual things" takes much less time than driving. Even if somebody had to watch the entire ride at 1x speed and just one ride at a time, there's no need to do it when the car is idle or driving to pick up the next passenger. You can also hire a lot less watchers than you have drivers, because a surge in demand in one city can be serviced by watchers in many other cities. There's no need for night shifts either, you can make everybody work 9-to-5 in whatever timezone they're at.