This may just be crotchety old man talk, but sometimes I wonder if the extremely protective child-rearing (particularly in schools) that seems to be abundant today will make future adults particularly susceptible to this kind of bullying.
If you never have to deal with this kind of social stress as a child, how can you possibly deal with it as an adult?
Perhaps getting bossed around on the playground is a good way to train the mind to appropriately deal with intimidation from employers, salesmen, etc.