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by ph0rque 4168 days ago
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.