These idiot billionaires and the Giving Pledge will help to destroy the system that made them wealthy and powerful - to eliminate their competition.
If they want to help humanity, instead they should be investing in establishing human colonies away from the earth before the human species is eradicated. Technology advancement from that effort would be a much greater benefit than a give away of assets to socialist looters.

"If this lady wins, we're in big trouble."

Love him, hate him, or be indifferent to him, Orange Man seems to be OK with billionaires.