This is not really surprising since blockchain is considered to be one of the top technologies in this generation. AI is the first one and blockchain is the second. Robotics became nothing anymore. I expect that that use of blockchain will become wider since it has a lot of advantages especially when it comes to security.
I have to disagree with your view on robotics, as the technology will obviously become dominant and rearange the workforce structure. It looks like it will take 50 years instead of 10-20 that it was expected though. But it is not nothing as you call it. It is a different technology from the above mentioned that can operate in parallel with Blockchain and AI and provide amazing results. I think both of these three technologies will make wonders and can be considered equal.