> a corrupt government and highly inflationary currency
As a sibling comment said, they move to a separate able currency like dollars or Euro.
No one in their right mind will move to a fantasy token whose value oscillates up and down every second, sometimes to within several orders of magnitude.
Bitcoin's price fluctuation in the past year is 200%
Etherum's is ~300%
Monero, 330%
It's not as bad as Venezuela's or Zombabwe's hyperinflation, but no ine in their right mind would use a currency this volatile.
Hyperinflation is one-way volatility. In either case the value changes rapidly making the "currency" in question useless as a long-term store of value.
We often praise projects that morph from their intended purpose in to something else (e.g. a good % of tech out there).