This has been known for a long time. The trickle-down theory is a joke. Rational people know this, and rapacious billionaires and their lackeys keep clinging to it. They are terrified that the jig might be up for them soon. That's why Trump lies to the working class and the average low-information American. People must keep on believing this toxic idea or the ruling class will start losing. Sharing is not an option for them. They are spiritually bankrupt.