Nobody gets that rich without throwing overboard any morals or ethics. You won't become a billionaire - let alone a trillionaire - if you are bothered by the wellbeing of other humans. Just being that rich is unethical, given that there are currently people starving to death on the planet.

To our society it's more important that few people have the opportunity to get insanely rich rather than that all people have food and shelter.

Priorities I guess.