Earlier quoted context omitted.
Yet NZ is supposed to have next to no corruption. OK... [1] http://en.wikipedia.org/wiki/Corruption_Perceptions_Index
That's an index of visible corruption.
Takes a little bit of epistemology to make sure that what you think you perceive is in fact what is really going on (how do I know what I know?). Corruption may be going on all around people, but they see it as "business as usual" or it's built into the "lawful" system, so isn't perceived as corrupt (though it is visible).
Some people expect a certain amount of "low-level" (harmless?) corruption, so reserve their identification of corruption to particular visible or impactful events.