Ten years from now, most of the world's commerce will be done on blockchain so it is more than just a niche or special case us.
These blockchains are going to effectively be nations down the road. Most of what you do, work, communicate, shop, play video games, watch movies, etc...will all be done on this blockchain.
That is how powerful it can become.
True, the fact that it can/will be so important to commerce pretty much guarantees its significance.
It will revolutionize science also. We will start following people that actually contributes to advancing humanity and not profits! Can you imagine where we would have been if scientists like Royal Raymond Rife, Nikola Tesla and many more had access to this information!