Many would say that the worldwide Open Source movement creates a lot of community. And it's true. Hundreds of people working closely together (even over long distances) towards one goal has brought a lot of community. After every Open Source-oriented conference, everybody says it's great to meet all those working on common projects and building a tighter-knit community.
People have also been noticing that Open Source, despite the fact that nobody owns or recieves royalties from the code, can be good for business. This is for many reasons, not the least of which are these: