Seems to me that, over the years, there have really only been a very small few who could really sing, let alone sing and play an acoustic guitar. And I'm not just talking about the winners. I'm also talking about some of the people who've been sent home early.
I'd like to think AI could find some real talent out of all those auditions they hold throughout the U.S., and I think the show could do better if they really tried, but it seems to me it's more about "the show" and "drama" than finding true talent. Rather, they just let the "talent" come to them and let the show take its own course. Then again maybe anyone with any real talent is sending their demo MP3's to the record labels via E-Mail and bypassing the show altogether. Maybe AI is left with the high school kids who don't want to drop out of school and hit the Sunset Strip for three or four years. So those are the kinds of singers the record companies want to sign and have them churn out corporate pop and sing National Anthems at Super Bowl games for Fox till their contract is up. Ok... rant over.