Interestingly countries that jail people for corruption still have corruption. For example in China you can be jailed and even executed for corruption but there is still a lot of corruption there. Here's an example I read about a few days ago where a city government arrested someone who demanded to be payed for their construction contract. (Obviously the real story may be more complicated.)[0] And there are definitely petty execs there as well. I think it may be because you need more power in enforce corruption laws, and power itself multiplies the effect of corruption. That is why I think the civil law vs. criminal law is an important distinction.

[0] https://www.scmp.com/economy/china-economy/article/3253705/c...