This is why you would speculatively buy Bitcoin and hold it long before that happened, at a time when people are happy to accept your fiat currency for Bitcoin. People learning from experience in Venezuela, Zimbabwe, North Korea, would probably feel glad to put some fraction of savings into crypto just in case, knowing that the interim volatility risk of it sitting in crypto is a worthwhile price to pay to have a reserve money supply that does not need to pass back through their original fiat currency on the way to being spent (as precious metals, stocks, bonds, securities, options, etc. all would).