There's one thing you forgot here: They want to do that in one place. We're already doing all that here, today. We work on code using GitHub or similar services

There's one thing you forgot here: They want to do that in one place. We're already doing all that here, today. We work on code using GitHub or similar services. We present our work on HN. We've got endless means of communication. And bottome line, we are a community. But, it's spread out all over the internet. I see where your question's going, which is why I wanted to clarify it a bit.