Psychology says people who try to get in an elevator or metro first and not let others disembark aren't necessarily inconsiderate: What this behavior reveals?

Psychology says people who try to get in an elevator or metro first and not let others disembark aren't always acting out of malice. The behaviour can be linked to stress, anxiety, egocentric bias, cognitive narrowing and a scarcity mindset. Understanding these factors can explain why some people ignore others while rushing toward an open door, seat or available space.