She's been done for years as a solo artist. The Voice was the only thing that helped her stay in the public eye and even during that and all it's success it wasn't enough to make people buy her album even with the promo she did on the show.
And the Legend stans tried to say she was the reason for the show's success. Why didn't that translate to sales then?
It's going to suck even more for her now that she left the show to
sit on her couch pursue her music career and no one is even interested.