I can’t imagine a world without fiat currency, for the simple reason that governments operate in a deficit. A world without fiat currency would imply that all government workers are paid with crypto, all roads are funded with crypto, the military is funded with crypto, etc. And since this currency is limited and deflationary, this would imply that the only people who can fund these governments are the crypto whales. This sounds like a dystopian nightmare.
Further, it seems obvious to me that many of the decisions made by the Ethereum community are only intended to benefit wealth hoarders and early investors (PoS and the deflationary aspect). Their decisions don’t seem to have the larger global community in mind, at least in an authentic way. They seem to see it, simply, as a store of value.