The natural state of a highway with a carpool lane is a free-flowing carpool lane and N lanes of bumper-to-bumper traffic. If the non-carpool lanes are moving freely, there's no incentive to carpool. Thus the sea of brake lights is the sign that the carpool lane is "working as intended."
Similarly, the natural state of an open source project is lots of code that still needs work. If the code is all ship shape, the developers will get bored and move on to other projects. A project that "basically sort-of almost works" is the sign that open source is "working as intended."