I would suspect that the vast majority of bullying ends when the victim is able to escape from the bully -- by changing schools, etc.

We hear about victims snapping and beating up their bullies because that makes a good story. How about victims who snap but then are beaten up (because the bullies are often bigger and more used to violence) even more? Probably much more common.

> The victim snaps, the bully gets beaten up

The unspoken rule is that the victim must only do hand-combat. They cannot use weapon in any way. If the victim uses weapon to defend themselves, they will be in the wrong.

Life is hard for victims. They are often bullied because they are weaker. And the only way out is to do hand-combat.