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Often when a country has a reputation for low rates of corruption, it is because corruption has been concentrated in fewer hands--wholesale, not retail--and the transactions are correspondingly larger.

In such places, retail-level corruption can be seen as competition with the market dominator, and crushed.

In the US, offering and accepting political bribery have both been officially decriminalized. The profit ratio of bribe to private benefit is typically well over 1000x.