Bezos is estimated to be worth $150 billion. With a lavish lifestyle spending $500 thousand a year, and a life expectancy of 85, he theoretically has enough for 3529.4 lifetimes, or about 23.5 lifetimes per billion. Given that rich assholes tend to also be legendarily cheap, this is likely a conservative estimate for the number of lifetimes. On the average income in the USA of $63,214, that would be 186.1 lifetimes per billion, or at the median income of $44,225 it would be 266 lifetimes per billion. So every billionaire has enough wealth to support hundreds of people for their entire lives, from birth to death. An unfathomable amount of money.