There's actually plenty of room. Who were the pop girls in 2010-2011? Britney Spears, Lady Gaga, Beyonce, Katy Perry, Rihanna and Kesha?
Britney: over
Lady Gaga: over
Katy Perry: won't be as successful anymore, getting old as well
Beyonce: doing her own thing, ditched the pop world
I can see someone breaking through in the next three years and staying for a while.
edit: Misread the title, but there still is.
