That never stopped them before!
Seriously, China has a long, looong history. And a vast population. There is piety in China, and capitalism, and I don't even know what you mean by "inbred" Chinese. They had a communist system 2000 years ago, they survived it. When they tire of the current fraud of communism, they'll toss it off.
They have something a nation can't survive without, and which we here are quickly losing: a sense of nationalism, of the superiority of their culture and nation.
China is not going away. I'd say more but why depress us both.
With regard to "inbreeding," simply this: it's the opposite of the melting pot that was/is America, wherein, combined with a robust faith and a relatively free economy, we became, in very short order and to the amazement, benefit and chagrin of the world, the prime earthly mover in world events.
Recall that my post was a continuance of the theme of juxtaposing the US and China that was theme of the post I responded to.