Memes

We weren't talking about the Russian Federation, but Soviet Union. The RF is Capitalist, sure, but the USSR was absolutely Socialist.

As for the PRC, it is Socialist, and does follow what Marx described. Are you getting this from actually reading Marx, or second-hand?

For starters, Marx described the economy of a post-revolutionary state to nationalize the large trusts and gradually fold the smaller firms once they get large enough. This is mentioned many times, from the Manifesto of the Communist Party, to my favorite concise explanation in Engels' Principles of Communism:

Will it be possible for private property to be abolished at one stroke?

No, no more than existing forces of production can at one stroke be multiplied to the extent necessary for the creation of a communal society.

In all probability, the proletarian revolution will transform existing society gradually and will be able to abolish private property only when the means of production are available in sufficient quantity.

The PRC mirrors this. The vast majority of large firks are under public control, and the vast majority of the private sector is made up of self-employed people or small firms. If the CPC attempted to forcibly acquire them without letting them develop, they would be committing an error by Marxist standards, unless they truly had good reason.

Key industries like finance and steel are publicly owned as well, if you control the rubber factory you control the rubber ball factory without needing to own it directly.

What would you have the PRC do instead?