And let's not forget Trump tried to use years-old accusations against former President Bill Clinton against his wife in 2016. But the accusations directly against Trump did not disqualify him from taking office in the eyes of many voters.
The same is true for Roger Ailes, the Fox News mastermind who changed cable news.
He lost his job after allegations from women were reported.
Obviously, the Trump example is different in its details from what we're learning about Weinstein, O'Reilly and Ailes, but the effect was arguably more sensational in October 2016 when the "Access Hollywood" tape, with its unvarnished description of what can only be described as assault, shocked the nation.
In hindsight, that it came on the same day the US formally pointed the finger at Russia for election meddling and Wiki Leaks doled out the emails of Hillary Clinton's campaign manager, seems relevant, although it cannot be argued that the other two stories blunted the attention that was paid to or the public backlash from those tapes.