As you point out, it depends on how we define "domain expert". I may be a "blockchain domain expert" but I also need to understand what consumers need from a bl

As you point out, it depends on how we define "domain expert". I may be a "blockchain domain expert" but I also need to understand what consumers need from a blockchain in order for it to be a profitable venture. My idea may be very innovative, but if it doesn't solve people's problems it's not going to make much of a difference. In other words, a successful business requires not only producing an innovative product, it also requires knowing if people actually demand this innovative product. One half is the core idea, the other half is how this idea interfaces with the world.