There's no reason why rideshare queues and car-rider assignments couldn't be fungible up to the point the passenger steps into the vehicle, special needs excepted.
Rideshare still behaes ona requ basis. But the vehicle at the head of the queue serves the passenger first requesting a ride, special needs excepted. Out-of-order arrival of rides is addressed that way.
That means the rider wouldn't know what vehicle is coming and when, which goes against the whole experience.
Also it's unlikely for there to be that many rides queued up at a single residential location which is why they aren't queued up there in the first place.
I think it's about having a pickup/dropoff area, not necessarily a queuing system, especially because ridesharing does not use traditional waiting queues.
Again, specifically not the case here. You are having a different discussion.
"if there's already a taxi rank, then uber should be using that space to pick-up/drop-off. If there isn't, then the current building is already unfriendly to taxis."