It's simple really; none of the Eastern Bloc countries - or, for that matter, Cuba, China, etc. - were ever set up as socialist states, nor did or do they operate under socialist economies.
Yeah, we've Muslims here saying no country has ever been set up as Islamic country either. I mean, since they've got nothing to show for in all the countries run by Islamic laws, there must be some fault in their set up.
Ideologies at the end of the day are bunch of crap, only good on paper and for daydreams.