You know, there are different types of socialism, not just the kind Marx wanted. Democratic Socialists and Social Democrats rejected a lot of his ideas on how to make society work.
Some of the types of socialism..
"...market socialism includes economic democracy, the Lange model, liberal socialism, market-oriented left-libertarianism, mutualism the New Economic Mechanism and Ricardian socialism. Other types of market socialist systems such as mutualism are related to the political philosophy of libertarian socialism."
So which types of socialism do you think won't work and whatever?