I was thinking along the lines of "a country that makes no secret of the fact that the ones who happen to have power due to their status in society (whether based on their wealth, social influence or whatever else) are free to use this power for their personal benefit without regard for any ethical concerns and especially without regard for the well-being of others". Such a hypothetical country would be worthy of corruption, as corruption would be a perfectly reasonable and expected part of their inner workings.

But...I don't find any real existing country that fully matches this description. There are countries in which this unbounded "rule of the powerful" practically exists, but they all try to sugar-coat it, which effectively makes them unworthy of corruption.

"What country _is_ it worthy of? "

For any country that is weak and unpopular currently.