I think the flip side is that whilst Trump's personal quirks and appeal might be unique, half the American polity unquestioningly does his bidding and endorses

I think the flip side is that whilst Trump's personal quirks and appeal might be unique, half the American polity unquestioningly does his bidding and endorses his insanity and it's not like his positions on the rest of the world are particularly unpopular or institutional trust and credible business-friendly conservatives are going to magically appear out of the ether when he's gone. The long view might not look like "Trump's boot trying to stomp on you forever", but it doesn't look like "America is a trustworthy ally, especially in business" either. It isn't going to stop the world from suckling on the US money teat, but it is going to make them a lot more selective about if and when they do so.