FF has not sold 1,000,000.

Britney isn't culturally relavent to this generation, she just isn't cool anymore.
Pop stars have their time on top and her time has run out. Its not a bad thing, yes she slayed all the girls years ago but not today and not in the future.
SHe is a sweet woman but for the sake of her legacy she needs to retire. She looks like a soccer mom playing concert during her Vegas show, a bit of a mess.