I have observed that people will abandon all the driving tactics when in a supermarket. That is: they will drive safely into the parking lot, and when they walk in they go all over the place. Shoppers will abandon a cart in the middle of an aisle ,blocking it, to look at something on a shelf.
Imagine if that was done on the road, it would be illegal. Anarchy has its uses, but it would be nice to see some social conventions observed.