How is that worse than the same thing with human drivers? All of that parking lot space could be repurposed as loading space for humans, and more humans would p

How is that worse than the same thing with human drivers? All of that parking lot space could be repurposed as loading space for humans, and more humans would probably be happy to use a cheaper ride-share service in which they can take the first available car instead of waiting for their personal vehicle to get through the line. (Note that ride-share isn't going to be "register with a particular car and wait for them to find you", but rather "get in the nearest available car"--automated taxis instead of automated Uber).