Non-billionaires take actions regularly based on the notion that they are right in their course, morally and or legally.
Now size that up to billionaire status. They too are likely to take actions based on thinking that they are in fact right in their decision making. The issue in that case: billionaires often tend to impact a lot of other people with their actions, because so much of what they do is outsized.
My issue might be with my neighbors on a single property line marker. Or maybe they think my trashcans are encroaching on their curb area, pick the issue.