Yes, the U.S. political system has become a race between people who can afford to pay for their campaigns. The individuals who raise the most money are the ones who can campaign across the country and run the most ads. There are many other qualified candidates, but they don't have the funds to run.
The United States political system is too geared toward the well off and well connected. Democracy is not necessarily the best way to protect individual rights, because the masses can vote to deny people of their wealth and rights. Politicians can campaign on taxing one group for the benefit of the other.
Election campaigns cost a lot of money. Greedy human beings are easily bribed and blinded by dollar signs. Many politicians let their monkey minds completely rule over their hearts. A black cloud has been cast over the innate integrity deep within their souls. Everything in this country has been corrupted by the same principles. Money is as they say, "The root of all evil."
In order to become President of the United States, you have to be very wealthy. Trump is an extreme example, but the Bushes, Clintons and Kennedys are all very wealthy. When they are in office, they only get wealthier, because people want to buy access to power. The Greeks already knew this.