The existence of Vocal Trinity is the proof that vocal talent has a place in pop music. You just need to be that "GREAT" so you can be noticed. Remember Mariah Carey still hold the most #1 record (Soloist) in the Hot 100 due to her outstanding vocals. Also no shade but Bora is more on average vocal skills.
and also Celine Dion, and so many others
but if you think, we can all agree The Britneys and the Rihannnas will always be more popular than the Mariahs. Not talking about charts, but plain popularity. And sometimes that is what label records wants more