Faith in the US for what? If it's faith that the US can annihilate you if you get in its way, I agree with you. But if it's faith in the USD and US debt as reliable stores of value, I would say that the economics of a sovereign power is different from the economics of a subject household.
Because everyone and everything is doomed on a long enough time scale.
If the USD falls so does every other currency. You wouldn't see the kind of money people want in currencies moving into less fungible goods that would hold value over a recession.
I think the more general idea should be - no king rules forever, but the eventual fall of US dominance in the world economy will bring most of that economy down with it.
