Most are released in both formats. Fools buy foolscreen. I can't tell you how many customers say they prefer fullscreen because "you lose picture with those black bars and they're annoying"

I've given up explaining it to people cuz they either don't get it, or don't care that they're missing 50% of the movie. The only time a fullscreen DVD is acceptable is a TV show, or a movie shot in that OAR.