if the data can be read to play the thing it can be read to copy it
if it is encrypted using even the hardest encryption, it has to be possible for all players to decrypt it, meaning either putting the decryption ability on the disk (which as mentioned above if it can be read to play it, can be read to copy it) or by using a fixed system with the decryption in every single player, in which case you just see how the player is decrypting it and hey presto you have it
all the billions they spend on something that is completely impossible to ever do... you'd almost think they had too much money and were trying to waste it, but of course we all know that's not true because they are constantly moaning about losing money etc...