Matters of greater concern
I can't speak for anyone else on the matter, but I can tell you why I no longer play the project management game when it comes to Linux. It's because of trust, or lack thereof.
Its a different game than it was a few years ago--Now, we have companies with a vested interest in what we do, and motivations (read: $$$) other than the "hey, thats neat..lets do it" aspect of the work.. you simply can't trust anyone anymore. Right now, i'd even go so far as to say that its stupid to openly develop a project for Linux. It's stupid now because you have no way of preventing Company X from screwing you over.
Unfortunately, the environment in which you have to work within is far, far different than it used to be. You have a totally different list of concerns now, standing inbetween you and the completion of your project. Yes, it sounds rough to say, but the fact is, companies like Red Hat and VA Linux Systems are turning against eachother. They're doing it in order to compete with eachother, rather than cooperate.
Rather than do the right thing, they are busy plowing tremendous amounts of money into ensuring that their way is the only way that matters in the end. They're removing our ability to choose freely, and build freely by insisting that their vision of the future should be the accepted default, without question, and without debate. If you dont fit into their battle plan, you're pushed off the map and forgotten about.
No one in their right mind is doing to develop something openly if they know that they'll be trampled under foot by Company X before they even get off the starting block. Nothing prevents Company X from getting wind of your idea, and putting any number of employees on the task full time, so they can slap their own name on it and be out of the gate first with it. I wish it were different, but until VA goes bankrupt, and Red Hat goes back to being a Linux distribution instead of the Linux distribution, thats how its going to stay, i'm afraid.