There is one small problem with this argument. This is just like the MMO structure. When they add an "expansion" it has a pretty small shelf life. Once a new expansion comes out it deems the one before it almost null and void. Sure the raid is till there.....but most people dont care. There is are so many new things to do that all the old stuff sits idle. So when the taken king comes out the 2 expansions before it are not going to hold much water. So new players are going to level up and go straight to taken king content. If you make these new players invest 140 dollars into this content.....you wont sell many copies. The new players are going to play about 30 minutes of that 20 dollar expansion. Look at warcraft (most obvious example)there have been 5 expansions at 40-50 dollars a pop plus the base game. Are you ( or anyone else) going to pay $250+ to play the endgame of one expansion? No you wont......so they lower the price of the old ones to almost nothing....in fact the have sales for the base game with up to 3 expansions for 5 dollars!!!! Something i once paid 150 for.