The Soviet Union didn't collapse because a lack of capability. They collapsed because it was too expensive to forge their own way, when most of the world could pool capital via free trade.
China is big. But the rest of the world is bigger. And despotic regimes inclined to trade with an embargoed state aren't typically the most flush economic partners.
If one thing the EU should worry about not turning into a Hotel Europe where people only go to visit instead of producing stuff.
SMIC which is their Intel raised 7 billion dollars last week from investors inside China. That’s on top of what the government is putting in. People underestimate the resources at chinas disposal.
It's benefited from 20 years of optimistic free market access.
No doubt they'll find trading partners, but it's not going to look anything like the open doors they've been used to. And they're going to start finding that their domestic and international choices now have trade consequences, rather than the look-the-other-way, laissez-faire approach the world has taken thus far.