Because capitalist Russia is pretty shit. The only thing it's good for is opposing the US hegemony, but even then it's still pretty cringe with it's capitalist oligarchy.
Compare modern day Russia with shit like the Soviets sending the first women to space. Seems like they were pretty progressive for the time compared to now?
How the mighty have fallen. You hate to see it.
Yes, I agree with you, but it bears reminding that China despite its explosive growth and poverty eradication still has a lot of regional inequalities. The coastal cities with their export manufacturing base have flourished for decades, but the more interior, poorer rural regions are still catching up. Even within the coastal cities, tens of millions of migrant workers (the total number of migrant workers is about 300 million, pretty much the entire population of the US) are still nowhere near approaching the living standards of a middle class household, for example. We’re talking about workers who still in shared bunk beds hostel-like environment.
China is so large and its population so huge that it is very difficult to progress rapidly, though the government is trying.