I think a number of things. One is in America, we know what it's like to keep a decent portion of your money. So, this change would be big. Conversely, people in these other countries don't know any better, so earning $1000 in a week and only getting to keep $200 is normal. They just do what they always did.
Then you have your Cubas and Venezuelas. These people can't even get food. It's rationed by the government and they run out and people can't even buy it if they wanted it.
The lifestyles in Russia and China are not all that great either. China may be getting better. But this socialization leads more to the haves and have nots than capitalism ever will.
As I said, it works on a limited basis in the Scandinavian countries because they only have around 5 million people in the whole country. Doing this in the US is a completely different ballgame.