> Change.org is a for-profit entity

Wikipedia claims that in summary information, but the text contradicts it; I suspect the people saying that (including Wikipedia) are making the error of failing to recognize that "for-profit", "not-for-profit", and "nonprofit" are three different categories (not two, with the last two being aliases), and that you can't distinguish between the first and second categories by just looking at the legal formalities that identify the third category.