It was never done right, Marx doesn't even detail how to do it right, most that try are stupid or evil. It can be done right by actual smart people, not these gender studies morons. One problem with Socialism is it's Centralized control, that leads to oppression and tyranny and corruption, Decentralized control is the best choice to guard against tyranny. Capitalism has it's flaws not the least of which being AI destroying the jobs economy model and Big Pharma making more profit not curing disease. I have always thought Socialism and Capitalism should coexist, Socialism being for the lowerclass and Capitalism being for the middle and upper class.