The reason that many were not prosecuted was because in many cases the statute of limitations had run out, or there was just not enough evidence to take to a trial. At the point many of them were finally called to account, the kids they had molested were adults, there were no witnesses, and they were mostly hearsay cases.
Regardless of how folks FEEL about it, the legal system has to run its course. There were also cases in which a priest was accused, but there was NO evidence at ALL and it turned out that it was a false accusation. But in any case, these men will receive justice at the hands of God and need repent of their sins.
I'm sure that will give the victims great comfort.
L