> There's no potential scenario where that happens

Maybe not in your lifetime. But you’re not practicing long-term thinking here. Global, trustless, decentralized networks allow humanity to fundamentally reorganize. Physical, nation-state borders are ignored by such networks. Cooperation for physical resources still does matter but that may also be lessened by technological leaps in sectors like energy and food production. Humanity, if lucky enough to not be oppressed by ultra powerful governments, will likely render federal/central governments much less important and thus much less powerful. Simply put, the value proposition of central governments is now on the decline.