When I say wealthy, I mean people like the Koch's, Soros, The Mercer's, Bloomburg. Hell that asshole Howard Shultz thinks he can be president. Not that I have a problem with people being rich, but people like this are obscenely rich. Have to much power and I hate their money being in the government. They change the laws and rules to favor them while screwing the common man. Bill Gates being one of the worst.
When I say feudalism I'm talking about all of us working for the corporations, getting paid in corporate dollars, shopping at the corporate store, and living in the corporate housing.
Oligarchy will lead to fascism when the system fails. A strong corporate state will be needed to keep people inline, and you're freedoms taken away from you.
So you should be worried about this type of wealth and it being in the government. Or it will turn into you're government.