And what if the widget gets poor rating from an Expert? Is it going to be deleted? Or maybe the author will have to update the widget to satisfy the needs of Experts and Subscribers?
Only Subscribers can rate widgets. The widget's rating in the marketplace (unlike Expert's rating) does not affect revenue distribution, but the Subscriber can use it to decide whether the widget is worth buying. Even if some widget has bad rating, it will not necessarily be deleted as long as people use it. It makes sense to delete inactive widgets, though.