> The problem with having a handful of people be billionaires and trillionaires is that money is power, and with that amount of money you have nearly unlimited power and influence over everyone and everything. A system that will concentrate that much power will be inherently evil, it will and does serve the needs of that few over the needs of the many.

It is kind of right but essentially wrong. In any society with the size of more than hundreds of people, it always has a power structure, and always has a small number of people concentrate power way more than others. It is not a problem with super rich people. Even in all the Communist countries (Soviet Union, Mao's China, etc.) where everyone is super poor and there is no millionaire, power structure and concentration of power still exists and is way more cruel than in a market-driven society.

Of course UBI doesn't solve this, because there is no way to solve this. Even if you nuke the modern world to stone age, power structure and concentration of power will 100% appear again and keep growing when you have a team, a tribe, a city, a nation.