Bests & Worsts Reviews from Amazon

It's hard to know what to say about this book. People love it, and love what it says, but several of the companies profiled turned out to be cooking their books, cheating customers, etc... Wells Fargo, Sallie Mae, GE... So I'm left wondering, were these companies extraordinarily successful because of the processes and ideas presented in the book, or was their extraordinary success based on cheating. I just can't take the book's advice seriously given the track record of several of the companies studied. Maybe if you're passionate about being the best, and you want to be the best in the world, and make tons of money doing it [your hedgehog]- you break the rules to get ahead?? Not the advice I'm looking for....