People tend towards corruption, power just enables that tendency. But not always the case and few examples of people in power throughout history who have been shining examples of showing us that it can be done right.
i am sure every rule has exceptions.
It does, hence tends encapsulates that niche. But then nothing is perfect so their will always be an exception.
Reminds me of an old IT joke - We finally made the perfect code, it debugs itself. Alas when we run it, it electriculted the programmer.
"Absolute power corrupts absolutely" - John Dalberg-Acton, 1st Baron Acton