Earlier quoted context omitted.
Same could be said for US dollar as a world currency, couldn't it? Do you think its model is sustainable? British pound has enjoyed a long history and was used as a currency for international trade until early 20st century. Then dollar took over. One could argue it's because USA emerged from WW2 as a super-power. But it would be foolish to say that only a major war or a fall of the empire will change what currency pe…
What you're describing is totally different in scale though. When the British pound got displaced as the currency for international trade it didn't suddenly lose 99.9999% of its value in a weekend. And whilst the Dollar isn't guaranteed to be the most popular currency for international trade, it's still going to be the currency a bunch of guys with guns insist Americans pay taxes in. There are real reasons people mus…
Well, yeah, most currencies are defacto backed by military force. That fact creates bad incentives.
Crypto doesn't have this luxury, it can be only be backed by the trust in code. If the currency is trusted - because it's open-source, open for all to use, is well designed - it's value is going to go up. See Bitcoin and Ethereum as best examples of this.
This make a decision whether to use a particular coin similar to choosing Python vs JVM and their ecosystems.
To be fair, I don't think stablecoins work well in that context. The information on how they are backed is not completely public, the companies issuing stablecoins are not that well audited...They are blobs of closed-source "stuff" that look like 1$