This is especially true in Third World countries. The main reason for this issue is lack of deterrence and punishment laws. To reduce corruption, we must change and update laws.
The thing about corruption in the third world countries is that even the people in power who are supposed to make sure that these things don't happen are the very ones doing it and when that happens, the people beneath them also do it as well. It goes from the top and goes all the way down.
Corruption is not supposed to happen at lower tiers and always frowned upon if revealed. But it is assumed not to be existing at the current tier, so each tier is basically stuck because people at that tier don't consider what they are doing as corruption. They don't feel corrupted because they think of it as mutual help and support.
So yes, it is sort of "fundamental right".