China got there by banning Google. I don't think Europe is willing or able to do that unless Trump antagonism continues for years. Practically noone who has a choice (people in Singapore and Taiwan) between them uses Baidu
Regardless, these euro-hostile MAGA voters will still breathe, eat and vote republican for the rest of my lifetime.
We should prepare in Europe for a future without the US in my opinion. Like China, but not, since the EU is about openness and freedom.
Several people who I know who voted for Trump (not a representative sample!) do not like what he is doing with tariffs (they are not Euro-hostile) but they are worried about the border. They would support someone else if that person "fixed the border" without raising tariffs. There is also the possibility that someone could convince them that the border isn't a problem (or something else is more important).
I know a couple people who voted for Trump the person. They don't see Vance in the same way and so won't be excited to vote for him.
Only time will tell. However remember that this too shall pass. There will be a different crisis in a few years.
You cannot do everything. Specialists can get really good at one thing, so it is best for the world to specialize and get those other things from someone else. Going it alone is bad for everyone.
However you also cannot trust anyone else. So you need to have plenty of options such that if one specialist turns out bad you can cut that one off.
There are other considerations outside of globohomo quantifiables—like workforce development, domestic know-how, self-sufficiency, robustness to supply chain failures & geopolitical upheavals… Basically, the Taleb stuff.