For technological innovation to take place, two things need to happen. First, the idea needs to occur in the first place and second the idea has to be adopted in a widespread way. Many examples of technology we use were invented many times in the past and applied to processes where it didn't take. Because of this I think it's very possible that innovative people throughout the world have indeed come up with use cases for this technology which could fundamentally improve something which we are not aware of because for whatever reason the idea hasn't spread.

Tech specialists are not often also expert marketers for their own ideas. At the same time, expert marketers involved with blockchain technology are typically involved on the scamming side so even if an idea is offered to the public which would otherwise sell itself it wouldn't have a chance in this environment. Blockchain experts, being primed to view this technology in its current context, may not even recognize how powerful a non-traditional use might be.

This is all speculation of course, but this is why I'm not ready to rule the technology out entirely.