"There are two kinds of politicians, insiders and outsiders. The outsiders prioritize their freedom to speak their version of the truth. The price for their freedom is that they are ignored by the insiders, who make the important decisions. The insiders, for their part, follow a sacrosanct rule: never turn against other insiders and never talk to outsiders about what insiders say or do. Their reward? Access to inside information and a chance, though no guarantee, of influencing powerful people and outcomes." -- Larry Summers, according to Yanis Varoufakis in "Adults in the Room"
It sounds a bit cartoon villainy, but honestly, I see no reason to doubt that he said this. Everything points to these people being casually desperate to be let into ever innermore circles. Even now that this particularly ugly circle is blown open, notice that they still simply do not talk about what their fellow insiders did except in vague generalities.
I cant help myself. "Adults in the Room ... with half naked teenagers putting the cloth down" or "Adults in the Room ... working hard to destroy the democracy and create violent authoritarian world".
Back to your main point, mafia operates similarly. In fact, there is not much difference between the two. What is Larry Summers not saying there is that being part of this circle is making this circle more powerful. Them not talking about what they know is itself "influencing powerful people and outcomes".
It isn't really surprising that discretion matters to villains. As much as it matters to everyone else.
Except for the parts involving criminal coverups. That seems to plague close-nit groups at any level of society, e.g. world religions, police, finance, families, etc.
