At some point additional wealth stops buying you significant comfort, but starts buying you significant power.
And to be honest, I think the area where that happens is a problem. I'm fine with people enjoying a life of comfort, I'm not so fine with people buying significant over others, over the society in which we live, simply because they have more money. It's a danger to democracy.
Any kind of concentrated power is a danger to democracy, but you can't setup any system that can counter that, because it will just concentrate somewhere else.
The only way to avoid this problem is for the people to actively, on their day to day live, think and act toward the society they want to co-create. Power to the people implies responsability for the people.
And we are nowhere near that. People don't want the responsability. They have enough on their plate already with their personnal life issues. They don't want to have to choose every day what to buy, what to read, what to watch. They don't want to include the entire what they think society should be in the process of choosing education, home or a job.
So they vote to delegate the power and responsability once in a while and call the resulting oligarchy a democracy. Semantics is way easier than implementing the real solution.
And to be honest, I think the area where that happens is a problem. I'm fine with people enjoying a life of comfort, I'm not so fine with people buying significant over others, over the society in which we live, simply because they have more money. It's a danger to democracy.