Perhaps you and I understand blockchain differently as a technology. After all, it is used by companies such as Microsoft, IBM and many others. They consider this a new stage in the evolution of Big Data. I see no reason why another organization in this case, the BRICS, cannot join hundreds of other companies. Perhaps, when you say "blockchain", you don't mean a specific technology that is written about in Wikipedia, but some kind of specific ideology?
Blockchain is absolutely
not used by Microsoft, IBM and many others. Some of those companies sold
tools to help companies try to build blockchain solutions, but
no company has ever built a certified solution with those tools. There was a lot of hype created by Bitcoin, but it was just hype. But with billions of dollars in market cap for Bitcoin, companies blindly signed up for the hype even if it made no technical sense.
There are
no documented design wins for blockchain outside of popular cryptocurrencies like Bitcoin. None. Zero. Nada. I have asked for this high and low. I created a whole topic here on this forum months ago, and have asked for proof in many other places as well.
And why is that? Because blockchain has only one clear value-add, which is evading government access to transactions. No established corporation can possibly have this problem
by definition. "Enterprise blockchain" is like "vegetarian filet mignon". It's makes absolutely no sense.
And by blockchain I mean the software architecture outlined in the original Bitcoin whitepaper, and the technology that thousands of other cryptocurrencies are based on. It is a technology designed to achieve effective governance of a data source (in this case, a ledger) through a popular vote of participants in a network instead a single entity that can be subjected to a government subpoena.
If you aren't trying to avoid a government subpoena, blockchain is an absolutely pointless waste of time.