In principle I'm certainly on board with the idea, but the problem is - at least in the Anglosphere, probably further - that the financial system is part of the military and policing systems. They are a powerful and persistent lobby that want a phone to be able to provide enough who-what-when-where to be able to put someone in jail or in extreme cases drop a missile on them.

That is one of the reasons the crypto market is behaving like some radical innovation instead of just a group of bozos speedrunning financial history. For the first time since the invention of capital we have an asset class where it doesn't take the cooperation of a group of armed thugs to guarantee the integrity of the system.