It's a very interesting point, and it gets to the heart of the fundamental incompatibility of capitalism and democracy.
The basic principle of democracy is that any power that one person has over another is illegitimate unless it has been conferred democratically, through elections where one person has one vote.
And we live in a world where money equals power. Where one dollar equals one vote on what is produced, what is consumed, who gets to eat, who gets shelter, and who gets to have their voice heard. When it comes to these decisions, about the everyday detail of our lives, some of us have many more votes than others.