This is purely speculative but many believe the billionaires aboard would not have empathy for others in equally dire straits, that they did not place themselves in, or that they wouldn’t lift a hand to help them.
Of course -- as Honore de Balzac wrote: Behind every great fortune lies a great crime. These people built their fortunes on price gouging and worker exploitation. They even factor this into their ROI calculations -- a human life is worth $X so the loss of human life is justified in their minds if a certain number of lives are lost.
Check it out --- Buffy St. Marie, Priests of the Golden Bull. Very powerful! (Content warning: the hook line is her people's name for a demon that possesses powerful people and drives them to cannibalism -- originally literal. though understood as metaphorical as well. So if you're cautious of such things, don't play this video at night.)
