How does the IT environment contribute to the success or lack of success in systems development processes?

I think it is obvious that a group or office that focuses on strong communication - both in sharing ideas and listening to those ideas - as well as having a focused and organized project leader are both huge benefits. There are a lot of good programmers out there and a lot of good designers, but not a lot of people that can easily communicate ideas, needs, goals, and other parts of the development process. Making sure that people are included in the plan, encouraging support within the group, and pushing communication are the ways I see it helping drive success. The same is true for the opposite  - a project can easily crash and burn if people aren't communicating or if the project manager isn't organized and can't keep track of what people are doing. I can also see how members of a development team who want their ideas done and don't listen to others can also be a huge hindrance in projects.