The value of blockchain
There seems to be two values of blockchain:
1) It's made lots of money for those who have been involved in mining. But by that, I do not mean the miners, necessarily, but hardware vendors, exchange operators, etc.
2) It is so complex that it is the perfect snake oil because the complexity makes it impossible for the salesman to be proven wrong... so long as he/she ensures that none of their proffered solutions ever actually gets built!