Even if 1/2 the people who play this game didn't buy TTK guess what; they would still make just as much as if everyone who still plays bought it at $20 instead of the $40 that it actually cost. So losing people for them because it is $40 is ok because at least 1/2 the people that still play this will buy TTK and they (bungie) are still gonna be raking in the $$$$.