Can business work out ways of exploiting/utilising an immutable public ledger that has the potential to register "everything that can be known"/digitised about an individual ? Most definitely.

Will they be able to do it via central banks QE and/or commercial banks fractional reserve banking ? I think (probably) not.

I hate to bang on about it, but for me the real issue is the ownership of the means of production. I know some say that in the knowledge/information age that this (Marxist) paradigm has shifted/been supersceded. But I'm not convinced. It just means that the means of production have altered - but these "means" can still be owned, as they always have. Knowledge and understanding can still be garnered in the service of wealth/power/privilege, its acquisition, and its protection.