You're being downvoted because capitalism has nothing to do with the topic at hand. But, because I feel like tilting at windmills, I'll say this: there's nothing inherently corrupting about capitalism. Corruption is inherent to human nature and exists in socialism, communism and every other form of government ever invented.

The reason for this is humans naturally sort themselves into hierarchies and people will always strive to better their position in those hierarchies. With better position comes better chance at survival for you and future generations of you.

Money helps in the climb up the hierarchy, but it's not sufficient in most cases. Most climbs require power. Money can sometimes buy power, but it's not nearly as effective as trading favors, forging political alliances and manipulating people through blackmail.

Money influences power outside of capitalist systems as well. CGP Grey's video 'Rules for Rulers'[0] does a great job of illustrating why.

[0]: https://www.youtube.com/watch?v=rStL7niR7gs