Except those other institutions (church and school) have not aided and abetted the abuse in terms of producing a consistent stream of propaganda promoting, normalizing or otherwise idealizing the abuse of sex. Hollywood has turned out a tsunami of material glorifying sex, promoting indulgence in all kinds of aberrant and illicit passions and idealizing sexual conquests, generally.
If you can point out when and where a church or school has done that, we can then speak of “glass houses.”
This is not the “nature of institutional abuse” unless the institution intentionally or, at least tacitly, promotes the abuse. That it merely happens or if, in a state of uncertainty, the institution fails to deal adequately with the abuse, that might imply negligence. It doesn’t, however, imply complicity. Hollywood and the popular media have clearly been complicit, not merely covering it up, but ignoring and “going along” because of the opportunity to be a part of the lucre-producing Faustian bargain and the profit they receive from it.
The Catholic Church, specifically, mostly acted in good faith seeking professional advice for best dealing with abusers and was given wrong advice at a time when the treatment of pedophilia was not at all clear – and still isn’t today. There may have been some priests and bishops who were complicit, but they ought to be tried as independent agents who were solely responsible for what they did by abusing their position and authority. The entire Church is not blameworthy for what some did who were clearly contravening what the Church explicitly teaches regarding sexual behaviour.
Hollywood personae not only engage in frivolous sexual behaviour, but promote it, aggrandize it, glorify it and profit enormously from it.