The act of confronting a perpetrator needs to be done from an adult perspective with the resources that the adult now has (that he didn't have when the abuse took place.)
Unfortunately, a lot of survivors fall back to the victim's age and emotionality when talking about the abuse. On an intellectual level, they know they are adults with much more power than they had way back then. However, the emotional filter or point of view come into play for many survivors when contemplating some legal or confrontive action and they emotionally revert to the vulnerable child.
Confronting or suing a perpetrator can be a liberating growth experience but it has a potentially high cost of terror for many. To the outsider, it seems to make sense to take on the perpetrator now that the survivor is safe from more harm. However, for the survivor, the emotional wear and tear can be too much and result in avoidance or self-comforting/medicating behaviors.