The thing to pay attention to isn't whether they're copying it exactly right, it's that they're copying the spirit and adapting it to their own circumstances.
Echoes of cargo cult science[1].
Chinese could easily copy Facebook and call it something else but with built-in restrictions that they're looking for. They take our tech and perfect it for their culture. That's not identical to a guy in a hut with a wooden walkie-talkie. Sorry.
The only difference would be is that it's a closed network. Doesn't mean it's "less" or "primitive" or "savage" when compared to Facebook. Just different.
They'd like to have some of the magic fecundity of the Valley too -- and why not? Though copying the overt structure doesn't get you there -- many many many have tried, including many in the USA (https://en.wikipedia.org/wiki/List_of_places_with_%22Silicon...). Hell, there are many studies and theories of how the Valley got to be where it is, with no consensus. I have commented further down in this thread on some unique or highly unusual factors that make it so effective (for me) right now but I have no solid theories of how it got to have the magic mix it does.
(legitimately curious, please don't take my question wrong)
There's a lot of visible froth about the valley available in the press, most of which is useless bull. Folks are starting companies, getting funded, and shipping product to customers without bothering to make a single press mention or crunchbase entry. Many of them working with folks they've worked with before. None of that culture is visible from outside the valley.