Please don't take offense. You are free to believe what you want as far as I'm concerned.
BUT,
There are people that have money and power that are not prejudiced. I know, because I have met them, worked with them and for a time when I was a teenager, lived with them.

However, the moment anyone starts to group everyone under a single condition is them attempting to classify all people to their idea of who they should be. If you drill that thinking down to the root, its prejudism.

Your statement of no human as an individual, no matter gender or race, are capable of handling a huge amount of either money or power without going overboard at some point places all people into a category of your rules.

You might as well write ~ no black persons (white persons, asian persons, native american persons, aborigine persons) are capable of handling a huge amount of either money or power without going overboard at some point.

You put me and everyone else into your idea of how things must be. You have dictated who I am according to you.
Like I said earlier, some people do it without even realizing they're doing it.