The very rich, the billionaires, most of them see themselves as rulers of the peasants. Having said that there are 204 people world wide that have signed the pledge to give away half their wealth either during their life time or upon their death.Their combined wealth is over a trillion dollars. Think about that 204 people and a trillion dollars. The thing is that it's not a contract and there really is no way to find out if they have lived up to the pledge or in this case died up to the pledge.
*No one in Trump's administration has made the pledge. Enough said.