The question, then, is not whether something works now but whether it could work - whether you know how to change it. Saying 'it doesn't work, today' has no value, but saying 'yes, but everything didn't work once' also has no value. Rather, do you have a roadmap? Do you know what to do next?
In this interesting read, Ben Evans analyzes the history of tech, and how most important breakthroughs seem like toys at first.