The number of times anyone in the industry has heard that must be innumerable. And I can understand why. There is vision and drive to make something awesome. The belief that this idea can be the next half-diablo-doom-craft. And wanting to be at the front of seeing that idea come to life is admirable.
Unfortunately, when you just start trying to make video games, that great idea is worthless. Not necessarily because it is a bad idea, but because you lack the experience to take that idea from the vision in your head, to the reality that the fanboys drool over. This is because a great game comes down to how the ideas are executed in the game.