Corruption outside of this fixed percentage is heavy penalized, as in life prison sentences.
I see a lot of estimating-as-inevitable in many problem areas - for example: the environment, race and sex relations, security / "privacy". I'm not sure whether it has increased, or I'm just more aware of it these days.
When we think that a problem is inevitable, we may conclude that various reponses that otherwise have little to recommend them might be a good thing: populisms, zero-sum thinking, authoritarianism, radical transparency. This idea of inevitability is in conflict with optimism in David Deutsch's sense: optimism as the principle that all problems are caused by lack of knowledge (and therefore that all problems are either solvable, or truly inevitable because of some law of physics - no examples of the latter being known).
And if all that lobbying money piled up , goes into the organized corruption, there is little left for the rest of the power percentage.