[nekojima]

At least in Canada cases of corruption and collusion can be publicly aired, criminal cases launched, and the most corrupt/dishonest politicians removed. There are at least two countries in the top 15 I know from first-hand experience where this is not occurring. There is direct interference and collusion on a huge scale in the economy by politicians, their families, and friends. Transparency International does not generally include this in their assessment, unless their are other market distorting factors, such as outright bribery or use of the judiciary for economic reasons, not just political.