I'd say that the difference is in market penetration and scale. Individual governments actually feel threatened by a global currency that is available on platf

I'd say that the difference is in market penetration and scale. Individual governments actually feel threatened by a global currency that is available on platforms most of their citizens already use and is backed by a basket of geographically distributed low volatility assets. If US is worried, then governments with smaller and more volatile currencies may be having a panic attack.