> China is just not good at team sports

One thing we know is important for a country to be globally competitive in team athletics is having pervasive grass roots youth leagues developing talent from an early age. My sense is the Chinese have a structured selection system where they try out kids in key sports and select the best for special development.

Compare this with Western democracies where kids of most skill levels are generally able to keep playing club sports through high school as long as they have an interest and any aptitude at all. In America, pee wee football, girl's soccer leagues, etc are part of the social fabric of communities. It's considered worthwhile to let kids practice, play and develop even when they show no professional or collegiate potential.

The deep reach and years of development of kids with no clear aptitude matter because it's about identifying outliers. I suspect it comes down to chaotic but pervasive casual development beating central planning.