https://cointelegraph.com/news/hyperbitcoinization-how-currency-crises-are-driving-nations-to-crypto
a perfectly good review of how bitcoin is now competition to the 2nd tier currencies and might be on his way to join the major leagues (dollar, euro, yen, yuan) in about 4 years time,bitcoin has been the primary way of storing and moving capital in a harsh regulatory and economic environments of Venezuela, Turkey, Zimbabwe, Argentina and Iran. Each country has it's own unique circumstances.
the endgame is not in sight yet