* Ports on both the Atlantic and Pacific
* A very effective transportation system in between
* In the big growth sector where points 1 and 2 don't matter, tech, it's still #1 in the world anyway
* A market of 350 million high income people (by global standards) under one regulatory framework
No other country can compare. No one else has this. These in-built advantages are incredibly hard to beat.
There will be crises but the key insight for me was that because of these advantages the US is almost always going to be better prepared to weather those crises than the rest of the world. That is why it enjoys such a huge inflow of capital and immigration (currently #1 recipient of FDI in the world, most immigrants of any country in the world).
It's just a big risk to bet your money against the success of the US, no matter how dumb its leaders get.
It probably also helps that Americans tend to flip out and go full doomsday mode when anything goes wrong inside of their borders, I mean it's stressful, it's not very well planned, but it does make problems hard to ignore.