Yes, there is a reason her shows are doing so well over there without any big hit in years. Everybody knows who she is, everybody knows about her hips, everybody knows she can release good songs.
The true answer is that she will if she wants to. She knows how to get that mega hit, but I don't see her aiming for that any longer. She knows that she can work with all the people Katy and Rih are working with, but she chooses not to. Because she doesn't feel like it I suppose.