> because the dollar collapses and the property rights that enforce the wealth they gained from these transactions disappear as the government is toppled.

sorry but this is such a coping mechanism, or doomsday talking. Neither is dollar collapsing nor US government is collapsing, as there has been no evidence whatsoever of any of that even moving towards happening, at least on any meaningfully predictable timescale (i.e. 3-5 years? while even that's rich for predictions). Anything past that is just broken clock being correct.. at some point in time.

What would it take for dollar to "collapse"? What are the exact mechanisms that would be required to start that process?

What is the evidence of US government being "toppled" with layers and layers and layers of diverse (financial, legal, military, political, social, you name it) protections in place? It's the kind of thing preppers like to dream of but it's not happpening in our lifetimes.

When things of that scale happen you see it YEARS in advance in true poverty (as in people starving), in anger (as in people getting increasingly violent) at scale, in mass mobilization of masses actually looking to topple the government. Nobody is working right now to overthrow US government, there were never any organized attempts at that, not even demonstrations of a vector that can once lead there, as in it's simply not happening (sorry you can't in all seriousness put Jan 6 there as that was shocking for US political PR, but shockingly irrelevant for any country that has gone through real upheaval). US is extraordinarily rich even in it's poor version, everyone has everything to lose and nothing meaningful to gain from any "revolution".