We have always been at war with Eastasia.

Socialism, communism, whatever other utopian ideologies, require that people be invested and actively participating in it. The way wealth stops being funneled to the top is that people are invested (and informed enough) to stop it from happening. How that would happen in a practical sense would depend entirely on how these ideologies were implemented. Anyone who tells you it’s all just very simple and easy would be lying to you. The main factor would be active participation by the vast majority of the populace. Without that, any attempts would be doomed to failure.

Socialism and communism have a lot more in common than communism and what the soviets (and those they inspired) did.

Futurama did it as well as a specific counter to Global Warming.