For a country with nearly one billion poor people, one will never make all of them rich with one step. That is why China "allows some peasants to get rich first", and why they say "Common Prosperity Does Not Mean Equal Wealth" and "Those Who Become Prosperous First Helping Those Who Lag Behind". Although it is truly questionable if those get rich first want to help those lag behind, with a big government, it is more or less realized.
kind of, but with the actual intent to make it work. the lie behind "trickle down economics" wasn't that it can't or never works as advertised, but that it doesn't automatically happen just by letting people get rich and the reaganites talking about it never intended for it to work. basically every rich country got rich through some form of uneven development