Could this have to do with investor visas? A couple of years ago, advertisements for the Portuguese investor were everywhere in Lisbon airport, and ads for estate agents in Chinese language were all over town. If you see China take over with your own eyes, that's proof enough.
Their demographics are increasingly challenging (large population is aging as birth rates collapse).
Not an obvious call in any way though. Maybe the US will do something sensible like open our borders.
In 10 years, will the US have imploded or not? If yes, China will be stronger. If not... maybe.
Yes, but only because the new administration has signaled that it is pro China, and will likely start to roll back restrictions on its exports, regardless of its human rights genocide.