Sadly, communism worked out even worse. When communists realized that NEP worked too well and peasants started to get out of poverty, they instituted terror to “prune” the population and “remind them why they need” those said communists (a reference to V for Vendetta movie line). Just the best known example, there were also 1920s razkulachivanie and such, https://en.m.wikipedia.org/wiki/Great_Purge