Yeah, let's just give up on making the world a better place. We might never reach Utopia, but we can for damn sure get closer especially if we free ourselves from dogmatic thinking. Do you really want to settle for better than nothing?

Communism is what you are looking for... where all people are putting in all of their effort to the common goodwill with government guiding the effort.

That system that failed everywhere and people found the excuse that it was not applied right, but the idea is sound. I lost my younger years living in such a regime, thanks but no thanks.

Ah yes, clearly the only two options here are all-in capitalism or communism. Definitely no room in between those two points for anything more nuanced.

Aside from being plain condescending or outright rude, you've shut down discussion about any approach that may be different. A better response would have been to ask them to suggest something, or show a case (another country, say) where this was already done.

Define "works".