See, the part that truly makes you decent about this is you recognize that luck played a roll. Certain uber-rich have been surrounded by bootlickers for so long that they genuinely believe that THEY, individually, got their fortune 100% through their own efforts, with no luck, and thus they don't have to lift a finger to support the society they live in that made this possible.
And by "support society", I don't mean give tens of thousands of bucks to welfare queens so they can make more babies. I think the rich should pay enough taxes so the government doesn't have to borrow money, and can maintain the productive stuff - the roads, etc - in top tier condition. I think certain wealthy people are basically "looting" America, by causing America to rack up a ton of debt and not even maintain its own infrastructure, in return for lower taxes.
Now, of course, as you point out in your own post - and I fully believe you - there's no secret club where the rich people coordinate their looting of America. It's more than each wealthy person, seeking their own interests, tends to support politicians who say what they want to hear - such as "we don't need to raise taxes on the rich, the current progressive tax system already charges them more (it doesn't if you factor other taxes than income), give the rich people more money and it will "trickle down", etc.
The real problem is that such ridiculous lies become official government policy because democracy is kind of flawed and ignorance can rule the day.