When the rich man has an advantage because he worked hard for his money, this is not a disadvantage to the poor - quite the contrary, the result is that society as a whole becomes wealthier.
When the rich man has an advantage because he bribed politicians into passing laws that make it illegal for the poor man to open a business without special permission from the government, or to take a better job without a college degree, that most certainly is a disadvantage for the poor - and in the long run for everyone.
That is what the article was talking about. It's not that it's wrong to be rich or powerful. It's that it's wrong to use that wealth and power to subvert the machinery of government and create artificial barriers. That is the problem that needs to be fixed.
When the rich man has an advantage because he bribed politicians into passing laws that make it illegal for the poor man to open a business without special permission from the government, or to take a better job without a college degree, that most certainly is a disadvantage for the poor - and in the long run for everyone.
That is what the article was talking about. It's not that it's wrong to be rich or powerful. It's that it's wrong to use that wealth and power to subvert the machinery of government and create artificial barriers. That is the problem that needs to be fixed.