If you expand your question to, "what are some examples of startups that haven't [yet] succeeded because their premise is too good to be true", you get lots:
fusion
household robots
molecular nanotech
strong AI
world peace
elimination of poverty
Small plug: my side project's vision is in that category, I think (AutoMicroFarm). But I'm working hard to merge the current reality of the prototype with the vision.
fusion
household robots
molecular nanotech
strong AI
world peace
elimination of poverty
Small plug: my side project's vision is in that category, I think (AutoMicroFarm). But I'm working hard to merge the current reality of the prototype with the vision.