I'll take the first crack at that.
It's through application. All the studies on the impact of whistle-blowing have shown that it's extremely beneficial for the organization. It may be a problem for the individuals who are engaging in illegality and corruption or abusing their power, but for the organization it's very advantageous.
Organizations in the private sector, for example, that have internal corporate whistle-blower policies have fewer government enforcement actions against them for less severe penalties. They have fewer lawsuits and litigation filed against them, and these are resolved with more modest results.
The truth is to the benefit of these organizations, and that's why most whistle-blowers don't break ranks. They're doing it on behalf of their institution.