My regards, brother @lanzjoseg.
First I want to congratulate you for the presentation and the writing. It is easy to absorb, very pleasant and dynamic.
I must thank you and also @ jadams2k18, you with your latest publications managed to clarify some doubts I had been doing for some time.
Regarding the subject of your publication:
"Private Blockchain" sounds like a contradiction to me.
One of the principles of blockchain technology is its public characteristic. This allows the inviolability of the data which is distributed in all the nodes of the network.
I imagine that it should work well in some intranet. That is, the network is private, but the distribution of the data is done following the principles of blockchain. Partitioning into blocks that are distributed.