https://www.youtube.com/watch?v=_MM5_VlMKG8

Bitcoin, currencies, and fragility by Nassim Nicholas Taleb

The most stable currencies are those that are most heavily traded between each other and for actual goods and services.

Some of Bitcoins' problem may be that it is so narrowly traded that it is far too volatile to encourage others to use it.

Lyons, Richard K, and Ganesh Viswanath-Natraj. ‘What Keeps Stablecoins Stable?’ Working Paper. Working Paper Series. National Bureau of Economic Research, May 2020. https://doi.org/10.3386/w27136.