American Idol 8's winner? Isn't this further proof?

I stopped watching AI a couple of seasons ago because I was sick and tired of the best singers getting voted off early (with the exceptions of Kelly Clarkson and Carrie Underwood, "America" got it wrong every year) Some people speculate that it's not America that decides, that it's the producers of the show who pick will win the title of "American Idol". Based on the fact that Kris Allen's record sales were so poor, and the fact that at least 3 "winners" have been dropped from their contracts, isn't this further proof that it in fact IS the producers who are picking the winners and not the American public? Why would America give all these votes to these people and then not buy their albums when they're released? It makes no sense to me.