David Heinemeier at 37signals published a post titled “Bug tracking isn’t a network-effect business” in response to a piece by Joel Spolsky in Inc. asking “Does Slow Growth Equal Death?" Heinemeier’s post is a possibly intentional misreading of Spolky’s so as to make it seem more controversial than it might otherwise be, with sentences like "I don’t think Spolsky notices a difference." So here is why this is a non-debate: Spolsky is concerned about the impact of scale economies (in fact the w...