Even if Kodak quits 5x7, there are still plenty of other vendors in this format - Fuji, Foma, Ilford, Efke among others. It isn't going away as a format any time soon - if anything, it is experiencing a resurgence as more people are moving into LF, and discovering what a nice aspect ratio it has, what a nice print size it makes, and how much more portable it is than 8x10.