Am I the only one who "likes" the current conflict over format? The way I see it, as long as you have the "hard-hitters" (Amazon vs B&N and Borders) promoting the opposite formats, and the ability to convert easily (easily being relative...) is available, the fight will prevent anyone from grabbing a monopoly and driving prices up. Of course, I could be completely wrong, but hey, someone will post and correct me.
