Failed for the *poor, the rich Americans are doing just fine

Not as long as the world uses the dollar to trade.

Other countries can stop enabling the USA, and side with China or Russia's financial systems, or make their own.

Every country that stops uses the dollar to trade would be one less tentacle for the beast.

Do they not have universal healthcare?

Do they not have high speed trains?

Not sure if they have eliminated poverty but they have taken hundreds of millions of people out of poverty.

Are any of these statements lies?

Well, that describes America, too, but I wasn't holding up China as a paradise, just as an example of proper economic policy. While Russia and America are the hillbilly superpowers feuding with everybody around them, China is already heading for the 22nd century.