Extremely rich people control every aspect of your life, how your city is planned, the state of the job market, the state of the economy, the laws, the state of the planet itself. One way that got a lot of attention lately is that extremely rich people prevent access to health care for everyone else.
Nobody has that much control. Human systems evolve from many different interests and lots of unforseen consequences. How are the extremely rich preventing access to health care for everyone else? The US is a democracy, people do vote and have a say in what they want their representatives to do. If universal healthcare was the priority for a majority of voters over time, it would have happened.
Don't be naive. Try to look at everything throught he lens that considers money is speech and corporations are people, and that the flow of wealth always, without exeception, flows from the poorest to the richest, and you will understand why it's a fallacy to think there is any good will involved, or that the ultra-wealthy are going to let you or I, the peasants, fuck up their plans.