Iteration speed is the decisive factor in making a game: a team that rebuilds every day ends up far better than one that rebuilds every week.

We'd constantly be improving the tools and just the iterative process and the speed at which that improves products is the critical element to success in games. The slower the iteration cycle, if you make a build every week and you prove, you go through one iteration every week, you're going to be way way way worse by the end of your project than a game company that makes new stuff every day.