The trickle-down theory of economics has it that it's good for rich people to get even richer because some of their wealth will trickle own, through their no doubt lavish spending, upon those who stand below them on the economic ladder. Notice that the metaphor is not that of a gushing waterfall but of a leaking tap: even the most optimistic endorsers of this concept do not picture very much real flow, as their language reveals pg. 102.
The trickle-down theory of economics suggests that allowing the wealthy to accumulate more wealth will ultimately benefit those less affluent, as the rich will spend their money, causing some of it to "trickle down" to lower economic classes. However, the metaphor used is telling; it likens the process not to a robust waterfall but rather to a leaking tap. This indicates a minimal expectation of wealth distribution, which implies that the flow of benefits to the less fortunate is likely to be very limited.
This perspective highlights the inherent flaws in the trickle-down approach, suggesting that it is an overly optimistic view of how wealth moves through society. If the rich's spending primarily serves their own interests without adequately supporting the economic welfare of those beneath them, the promise of widespread benefits becomes questionable. It calls into question the effectiveness of policies that disproportionately favor the wealthy, revealing the need for a more equitable economic strategy.