Wouldn't trickle up economics work better? Poor people have more unmet needs and more likely to spend any extra they get into the economy.
It depends on what you mean by “work better”.
If your goal is to further enrich the capitalist class while building a quasi-religious doctrine that results in failure of the working classes to see progress resulting in popular pressure to even further enrich the capitalist class, no.
If you have a different goal than the people promoting trickle-down theory, then, sure, maybe.