[nuggien]

the only advantage i could see in creating a non-profit vs a for-profit, specifically in this case, is that you get the free publicity and goodwill of customers at the start. "i'm creating a wordpress competitor" doesn't sound nearly as good as "i'm creating a wordpress competitor that can never be taken away from you because we are a non-profit". If you create a crappy product, it doesn't matter in the long run, of course.