Thanks for your little essay there!
Adoption and use of the currency must keep pace with the price increases in order to sustain them long term. It has to be used in commerce in an ever-increasing way, otherwise the price will be driven by mere speculation (which is not a demand for utility but profit).
In times of huge inflation and bail-ins, couldn't the function of preserving your wealth be enough? Especially once this crisis accelerates, as I expect it will. I think when the shit hits the fan, BTC will get a huge boost, even without many merchants accepting it (of course that would help additionally).