Let me disagree. Corruption is corruption but not cooperation. The same as cancer is a decease but not your new living form. The “bribery game” is bad corruption model because corruption often occurs when you don’t have a choice and you have to accept the corruption risk (which can cost you infinite money). “The public pool is multiplied and divided equally among the players” – they modeled Denmark but not Kenya to learn corruption, didn’t they? “Corruption is largely inevitable” – they should learn about blockchain.
Lastly, I grown up in corrupt country (Russia) and I do not only think that bribes are acceptable but also think that anyone who does this should donate the same money to anticorruption agencies to treat this disease.