What are the benefits of open source software model to original software writers?
I am interested in what the benefits of open software model are to original software writers (not users). I more or less understand the concept from users standpoint (they can modify it, just like Linux, etc.) What I would like to know is what would a developer gain by releasing his software into community. He cannot charge for it anymore, even if he still holds IP rights like patents. Charging for support, not licenses? Quick market penetration? What else? Thanks.