imo i actually hate the idea of a public crypto currency
people think that the government having their hands on the levers of a fiat currency is a bad thing, but it’s an incredibly useful property to make sure that we can stabilise things and push away from recession etc! without those levers we can end up in a spiral a lot easier
i think though that where these problems don’t exist is behind the scenes: what if the whole world replaced SWIFT with a private blockchain? maybe a wire transfer wouldn’t take 5 days and cost like $20 (or maybe it would because it’s probably not the technology that makes these things slow)… in this case, you have a known group of semi-trusted actors (international banks), which is actually a perfect set of properties for a blockchain: they’re all able to cooperate but don’t implicitly trust, and can verify each other but mainly use blockchain so they can all automatically agree