So, the Gospels also mention that Judas, when he objected to Mary Magdalene's anointing of Our Lord, wasn't actually concerned about the poor, but he had been embezzling from their common funds, so his corruption goes way back. We don't know why. Did he just not have faith in Our Lord or lose it along the way? Or was he just overcome with greed?
I still think Judas should be the focus of a series of meditations for a special "accountant's" or "bursar's" 5-day silent retreat.
I think there's a fundamental danger to being mired in worldly concerns, the bottom line. Other officials, whether at a non-profit, religious order, etc. can keep their focus on what their organization is about: spreading the Faith, teaching, forming the minds and souls of children, preaching, tending the sick, spreading the truth (news), etc.
But that poor accountant stares at a screen every day, focused on that bottom line. If only we could get more people/viewers/clicks, we'd have a higher number on that "income: donations" entry! Then the bottom line would be better.
So they will be inclined to compromise, modify their views, whatever it takes to get "more people" to support their organization (readers, viewers, benefactors, parishioners, etc.)
Just look at Bishop Fellay. He was bursar for the SSPX. It seems to have formed his thinking into a very worldly, practical, numbers-focused worldview for the SSPX. If I were to guess "what caused his fall", it's the best guess I have. Although only God knows for sure. Bishop Fellay was raised Trad; right in the environs of Econe if I recall correctly. Like across the street or something similar. So all the pieces were there, for +Fellay to become an excellent Trad Catholic.
I know the answer is "original sin" or "free will", but WHAT PART of his free will led him to his fall? It wasn't wine or women in his case. I think he just formed too human, too material, of an outlook. Probably caused by his daily work keeping the books and watching the purse and the things that were contained therein. Hey, it happened to Judas, why couldn't it happen to other religious bursars?
But I know that both Jesus Christ and Archbishop Lefebvre (who are likely in the same place right now) had bursar problems.