I think they're still around because of the power they have. Katy Perry has enormous power (or power behind her, as in her handlers). Think of her fans here - they love her and have no idea what she's into. It's sad too because she's supposedly an MK Ultra puppet. If you search YouTube you'll find videos of her (and other performers) having mental breakdowns or mental "freezes" onstage or on camera. It's kind of ghastly to watch.