Right now China has a per-capita GDP of about $6000, while the corresponding figure in the USA is more like $50,000. The per-capita GDP of the USA + China is about $14,000 - about the same as Mexico.
So... when everyone in china "gets rich" we can all live like Mexicans?
That's also ignoring the increasing divide between the rich and the poor. In an economy based on "intellectual property", it's not people who work for a living who get rich. It's people who invest in the correct government-granted monopolies. Only entities with money will make a ton of money.
And, just to be clear, you're better off buying scratch tickets than hoping "luck out" and be the next Bill Gates.