Salespeople who sell big-ticket software tend strongly towards the bully type. This would be fine if it were only outwardly directed, but they often use the same tactics internally.

I think the same phenomenon manifests with corporate managers. It's all well and good if a middle manager has the teeth and claws to hold his own in the corporate jungle. She/he shouldn't necessarily use such armament in other contexts, such as when dealing with the craft-oriented techies in her own group.

Some buddhists would say something like, "One is shaped by their livelihood."