I was just chatting with a friend who built a whole corporate process planning tool using Meteor. I think many platforms such Dart has the same concept and has a much larger user base.
Another case illustrating that "build it and they'll come" logic doesn't work in startups.
I think investors will want to see that you have a proven track record before they trust you with money upfront. For example if you want to boil the ocean and you need money to build a prototype burner, you won't get very far, but Elon Musk would.