That's a great question, blockchain provdes for both public (open) chain as well as private (closed) chain, both taking advantage of blockchain technology.

I think there is agreement within the community that in any case, due to evolution of farm groups, the distributed control is more fiction than truth, and even if it was true, the distributed control prohibit innovation and change.

usage is not binary, either use public chain and use it the way bitcoin does or not use it at all, there is a balance which is based on the use case, and this is the balance I am trying to achieve with this post

let move on from distributed and consider working assumption we will use block chain (which does have significant benefits on just using a DB) and move from there