I agree that the blockchain technology is a part of 3rd industrial revolution. It also includes such things as sharing economy, but the main invention is only to come - 100% renewable energy.
I think a big part will be once we decentralize the internet (if that ever happens)
I was doing some basic research the other day and I stumbled upon this
If every local community started setting up their own MeshNetwork, we could essentially democratize and decentralize the internet - Doing this on a such a massive scale is the bigger problem, but if we start small and locally we could connect directly to IXPs for much cheaper than what ISPs charge for last mile customers (such as Open IX - who wants an open and free internet)