I can imagine this can be hyper specific to the store itself, not as a generalization across an entire country.

To give more anecdata — Union Station in Toronto has trains that leave in all directions. The ones going East and West tend to form queues on the platform at rush hour. The train heading north-west to another city tends to form mobs that rush the door upon opening.

Lots of reasons why, but geography and SES may not factor as much. Could be something as simple as supply/demand of free seats.