very rarely, closed-source projects are released as open source (e.g. Doom 3), but I think we can all agree that that is the exception to the norm Well, if we

very rarely, closed-source projects are released as open source (e.g. Doom 3), but I think we can all agree that that is the exception to the norm Well, if we compare to the list in the parent, it's much more. At least Firefox, Blender, Rails qualify. These were products that had no future in closed-source form. If they had, it would have been financial madness to open source them.