this is a misrepresentation of both marxism and modern socialist theory derived from marxism - that famous slogan "from each according to his ability, to each according to his needs" was something marx said about the ideal communist society where work is no longer necessary to survive and is instead something people do because they want to do it - it's a biblical paraphrase and is not the entirety of communist theory - any more than any slogan sums up an ideology. if you divorce something from context and misrepresent what it's saying, again, you can make anything sound impossible and ridiculous. do you really think that comparing GDP, "this imperfect measure", is at all an appropriate way to compare the welfare of the people living in two areas? are you joking? does that pass the smell test for you?