Because she's the performer of this and the previous generation. When you are 17yrs into your career, 99cent jingles is the last thing on your mind. Selling quality albums, 3.6 mill ww to be exact. Even more than some of the girls in their prime/peak and having the 3rd highest grossing tour for a female artist ever is all that matter and not to mention you make the most $$ off of tours.
No one wonder she made $115 million last year and was at the top of the Forbes list, while other girls who depend on 99cent jingles didn't crack the top 5. Mess at this thread being reported!!