The same reason you gotta "google" to find a real good singer, but people like Miley Cirus are thrown in your face. You really beleive The Jonas Brothers "Rock"?
Real artists usually aren't as easily molded into marketable tools because they stand firm on what they beleive. I know that better than most of you ever will. I lost out big from not allowing myself to be molded. And I was firm in my ways at age 15-16, so you can't sell the bullsh*t to me.
Music business is no different than the car business, cereal business, whatever. Don't bullsh*t cars sell because they look cool and everyone else is driving one or wants to drive one? Can't you put a 10 cent toy in the bottom of a box full of sugar and call it "cereal with a prize inside"? Same sense, if you want a balanced breakfast, you don't go with the "popular cereal. You want a sufficient across the board reliable vehicle, you're not getting that same 300C with 20s on it every other wanna be Baller got to look cool while making payments on what's ultimatley a K-Mart brand RR Phantom.
I don't have a problem with the music on the radio, reasons why? 9 times out of 10, I'm playing CDs. I heard "The War Report" by CNN just today for probably the ten-thousndth time, know the entire album word for word and still love it like I did in 98'. Have yet to hear an entire verse of the song "Poke Her Face". And FYI, CNN was never mainstream. Nore, year, but CNN...never.
You have no one to blame for the music you choose to listen to but yourself.