The next installment in theKnightWRXApr 26, 04:33 AMUSB sticks are too expensive and take too much time to duplicate "en masse". DVDs are very cheaper and take few seconds to duplicate if even that since they are being pressed (not burned in the case of mass duplication). USB sticks are also more expensive. It doesn't make sense to go to a USB only distribution model, at least from a cost