It's interesting to think about what we call corruption. If a company bribes someone in the government with decision-making power, it's corruption. If a company pays money to a person in another company with decision-making power within his company (not gov. related), it's usually more difficult to qualify that as corruption.

One could argue that political corruption only arises when someone breaks the illusion of the State being some kind of entity that seeks the well-being of every citizen. I mean, the crime doesn't appear to be about receiving money, but about breaking the illusion (by seeking your own well-being).