supposedly won't play used games. or be backwards compatible. something tells me that the system wont sell well.
i guess with the used games, the playstation 4 will limit them in their content, much like the trial version of the game. forcing purchasers of used games to buy a liscense to further unlock and release the full content of said games.
if this (and the xbox durango who have similar features) actually happens i really dont think anyone will purchase the system.
buying and selling used items has taken place most likely as long as the barter system has been around. imagine going to your used book store and buying a book, then having the buy a few more pages just to finish it.
good choice sony. your not only killing business' you are possibly creating your own demise.