Won't Miss #261 - train access blockers

Perhaps this is normal behavior all over the world, but I never experienced this until I came to Tokyo. Very often when I'm waiting in line for the train to arrive, and there is one person at the head of the line in front of me, that person will not get on the train even when there is a break in the traffic flow of people disembarking. Any reasonable person would get on the train when the door