In my experience, there are two kinds of teams that achieve success with games.
The first kind is absolutely sure they will make it. They put all their energy and effort into finishing the project. They crunch a lot, and often they don’t respect local labor laws. But they are certain their vision is great, and they may eventually be right.
The second kind believes in a vision as well, but they are aware that the odds are low. They still go for it, adopting the philosophy: “We can fail, so what?” They know they would pursue the project anyway. Life is short, so why not try?
These, in my experience, are the teams that might succeed. Conversely, the people who think like: “Let’s see how it goes,” “Let’s make a game with this new tech because it can be a goldmine,” or “Let’s make a game for this platform because someone else made money,” never, ever succeed.