It is not appropriate in families. It just does less harm, because parents are more likely to notice harm and change.

When I wrote "I have seen it" originally I meant siblings in families. At this point, I have seen dynamic three times. Each time one kid ended up being systematic aggressor and other victim. The victim was pushed to submissivity and aggressor honestly believed he/she is entitled to act like that. And that victim is bad for defending own toys or boundaries.

And each time it went on, until parents changed approach.