The self-custody war is already won.

The fact that fiat tyrants and oligarchs have not yet found a way to eliminate self-custody proves to me that doing so is impossible. They must instead resort to inefficient fiat price manipulation schemes in the hopes of scaring off the masses long enough for them to accumulate as much as possible for themselves. The problem is that making the fiat price go higher brings in more speculators while making the price go lower moves that much more supply into the hands of true believers. Either way, they are doomed to lose their control over the money.