Everybody has to report on the initial disaster, and after each wave of the media cycle, more outlets decide to stop reporting on the story (or for many, decide if they can get away with stopping.) The government press releases get fewer and trickle to a near stop, so now the only press releases they're getting are from victims groups and lawyers which are easy to ignore. Eventually a report is released that condemns everyone for incompetence and nobody for malice, and a recently retired fall guy is chosen to have some moderate consequences, like a retroactive reduction in rank that slightly affects their pension.
If our rulers weren't protected from consequences, they'd have to be competent. Endless delay got Epstein night-jail on a child sex trafficking case that started as one of the most observed prosecutions in the US.
This is a catchy slogan, but it doesn't really make sense.
Edit: apparently it may be attributable to William Penn, of Pennsylvania fame.
For whatever reason [0] came to my mind thinking about it.
In all those cases, the victims have not received "justice" for a major, defining, part of their life. That's what the catchy slogan tries to capture.