@Absolved
Your ignorant generalization of Katy Perry fans is almost as ridiculous as saying Katy will fall to the same fate as 50 Cent. You asume that her fans will all move on in a year or two, but let me remind you people said the same thing about Britney and Christina and their fans stuck by them for over a decade. New artist have came along through out their careers too, but it didnt make a difference. There's no rule saying you can't like both artist. The crop of "clones" (For Gaga: Ke$ha; for Katy Jessie J) you speak of are no threat to anyone. They are building up a fan base of their own.

I guessing your one of those people who judge Katy based off her singles, but doesn't bother to listen to anything else. (Do you really think Linda Perry listened to the entire Teenage Dream album and the entire One of the Boys album?)The singles like Hot N Cold, California Gurls, and Last Friday Night were designed for radio, frivolous pop as you call it. But there are other songs like Not Like The Movies, Lost, Im Still Breathing, and Who Am I Living For that counter those songs. Radio plays her music because they know it will get listeners because people love her music.

Katy Perry's sound is not dance/euro/electronic, so if that sound dies out it won't make a difference. You forget her debut album, along with half the songs off Teenage Dream, are pop/rock. Infact, Katy is the only mainstream pop act to not put out a dance/electronic/euro influenced album. There are multiple genres on Teenage Dream, it's not one toned.

And as far as image goes, Katy has change her look multiple times, I can assure adapting to a new look will be no mission for her ;)