My main concern about libra is that, by being strongly tied to real currencies, libra issuers (not just facebook, all of them) have effectively assumed the role of unsanctioned mints, with the ability to damage the stability of each currency because libra is not tied to the international exchange system: if you pay facebook, or anyone else, $10 and they convert that into libra, now they have $10 that they will absolu…
Every bank and credit card is also an unsanctioned mint. It works fine. The actual minting of money has not been a major factor in managing the money supply in a long time. It's all done by setting interest rates.
Banks and credit issuing institutions are heavily regulated and have a variety of criteria that must be met to legally operate in that capacity.