I think blockchain will be what makes all the other whiz-bang tech useful. AI and deep machine learning really are useless without data integrity. I also don't think full decentralization is necessary for a lot of blockchain applications. Yes, of course, it's useful for avoiding regulators, but there are just so many more use cases for federated blockchains and semi-decentralized ones where you want to ensure data integrity and mutually assured destruction within a defined set of actors. That being said, it's kinda funny to see the markets blow sky high on these comments, because "blockchain" does not mean "cryptocurrency" at all. There will be some use cases for a lot of these public chains but that will probably only be in relation to how they can interoperate with some of the private solutions that are currently under development or will be soon under development as a result of this initiative.