All of these systems are already software.
> If there was no value in it, why did we create all those institutions in the first place?
Centralization makes them massively more efficient than crypto. If there was a way to make them more efficient that did not involve throwing risk models out the window or regulatory arbitrage, someone could just do that in the traditional economy without crypto.
This is a lot like the programmer tendency to want to re-write instead of refactor because to understand a system is way harder than to set out on a quest to build a new one. Although they always end up the same way: at best what you started with. To me this falls squarely under Spolsky's "things you should never do." [1]
There hasn't been a single actual competitive business built on top of crypto in fourteen years. That's because they're all hamstrung by the massive inefficiencies they boat-anchor to their solutions. Decentralization and trustlessness and permissionlessness don't matter at all to 99.9% of humans. Attempting to offer these is incredibly inefficient and makes it totally uncompetitive with centralized solutions for every legal use case.
I would argue it fails Occam's razor to try and add miners to a monetary system.
The simplest, most efficient, most economical solution to moving value around is centralization. If there's a better way to solve any of the given problems with crypto, there's an easy way to optimize it further: get rid of crypto.
[1] https://www.joelonsoftware.com/2000/04/06/things-you-should-...