I agree with everyone else, you don't know. Microsoft fails often. Google fails often. Everyone fails often. I think the best solution is to strip your idea do

I agree with everyone else, you don't know. Microsoft fails often. Google fails often. Everyone fails often. I think the best solution is to strip your idea down to the very core, and launch it asap to gauge user interest. That way, you'll get your answer, and waste the the smallest amount of time and resources.