I just wanted to point out something. Admitedly, I haven't read through the entire thread so I apologize in advance if this was at all repeated.
But Karl Marx did not favour big government at all, in fact he advocated lessening government's power in favour of public ownership.
And it's really hard to make a distinction between socialism and communism since most of the time they're used interchangeably. Perhaps the only difference is the negative connotations which the term 'communism' acquired throughout history.
And communism was intended as an evolution of capitalism. When workers realized the injustices of their situation, blah, blah, blah... you know the story. If not, http://en.wikipedia.org/wiki/Marxism
I think the problem is how to convert an entire population's way of thinking and percieving, from capitalist ideology to communist ideology. Given all the capitalist ideals and propaganda we're fed starting in grade 1 with the formal education system...etc,etc. It's difficult to avoid a capitalist slant on our world view when we're being raised by it's institutions and whatnot.
It could work. It's a matter of ideology.