unfortunately, it is rarely done "correctly".
conservatives still promote the discredited theory of "trickle down" economics: the idea that if you give big tax breaks to the richest people in a capitalist system, they will reinvest that money into the system, resulting in more jobs, etc.
false.
whenever this policy is implemented by conservatives, the opposite happens: the rich hoard their wealth and outsource jobs to cheap overseas labor and automation. result: more money for the rich, less for you.
never works. never has. and yet conservative economic policy is based on this insane fantasy.