I think one of the things that is getting ignored here is how culturally accepted this behaviour was, for a very, very long time. It's not just that there were a few bad apples running around the showbiz world taking advantage of their power; we really, really mustn't allow that to become the narrative. These celebrity cases - whether it's this or Operation Yewtree - have a worrying tendency to get personalised, as if it's just the individual failings of one or two people that are to blame, and not an entire culture that turned a blind eye to the sufferings of women and girls.
Our entire culture was set up in a way that excused men behaving in these ways - and it was a HELL of a lot of men. Every time there is a thread on here about sexual harassment in the 70s-90s, there are hair-raising stories of the extent of abuse and the entitlement of the men perpetuating it. Not celebrity men in Hollywood - ordinary men, in ordinary workplaces. I bet if you started an AIBU now "Have you ever been sexually harassed or assaulted" there would be very few women in their 30s and older who hadn't experienced it. (I don't know about women in their 20s, I would like to think their experience had been better because of the change in norms, but I fear this is naive).
Of course, it was never morally acceptable, but feminists taking a stand against sexual harassment were for years caricatured as bra-burning lesbians. Campaigns to recognise the damage caused by sexual harassment and assault were ridiculed, or marginalised. Women were told they were "asking for it" by wearing the wrong clothes, or acting the wrong way, or simply by being pretty. What was done to them was minimized, as if they didn't possess dignity or the right to choose who touched their body and when. Predatory male behaviour was normalised as the inevitable outworkings of a red-blooded masculinity that just loved women. Ugh.
We need to face the fact that cultural norms around sexual harassment have changed over time - and to acknowledge what that means in terms of the everyday experiences of so very many women. Weinstein is the highly visible tip of a very, very large iceberg.