The ones they usually use right now - holding physical USD, bartering, physical gold, real estate, etc. depending on the use case and degree of wealth.

Local currency does still get used, it’s unavoidable, and causes losses. There is no perfect solution.

One economy which fits the description is India - check out the boxes of cash hah! [https://www.livemint.com/Politics/eGzzHAcOe5VePoyCd7n0EN/Inc...], and [https://timesofindia.indiatimes.com/city/mumbai/mumbai-raid-...].

(FYI, a cr or crore == 10 million, a lakh == 100k. Even at current exchange rates, that is a lot of money anywhere, and an absolutely massive fortune in India).

But there is an element of this in ALL economies, including the US. It’s a matter of scale/ratios, not a yes/no thing.