This isn't that scary, in situations where the passenger does not own the vehicle the route is probably going to be shown to them on the device that they use to request the car, so there is plenty of opportunity for a negotiated route (rather than a route determined strictly by the vehicle/operator).
The trick is convincing enough people that they should pay attention to the route they pay for.
The trick is convincing enough people that they should pay attention to the route they pay for.