[quote name='Redeema']That's assuming that everyone buys a game on day one. I just got Civilization Revolution a couple weeks ago and I'm pretty much done with it and not interested in the DLC, but if it went on "sale" I would strongly consider it because I have points to burn.[/QUOTE]
You pretty much just made my point, though. Regardless of when you buy it (don't know when I said anything about day one) . . . Realistically, it's hard to tell when, if ever, a particular DLC will go on sale. If you really are interested in the DLC for a game, are you really going to wait around hoping that there's a sale on it eventually, in which you might save a few dollars? Or are you going to just go ahead and buy it?
So the only people they catch are people like you who sit it out because they don't really care that much one way or the other, but who will say "what the hell, why not?" when it does go on sale. Sure, there are some, of course. But how many, really, relative to the overall number of 360 owners?
It just seems to me that it's an incredibly poor marketing tactic to limit the audience for your "deals" to people that 1) own the particular game in question (because really, how many people will really go out and buy a game just because there's a deal on the DLC this week?), and 2) haven't already purchased the DLC (because, presumably, they didn't care enough about it), and 3) would still be inclined to grab it for the hell of it if it were on sale. They'd sell a lot more (and keep a much more interested audience) if their deals meant something to a larger portion of the user base. Therefore, it would make sense (I would think) to do the exact opposite of what they're doing, and focus the majority of the deals on games and the minority on DLC.
Or, as I've alternately suggested in the past, have two deals every week -- a game deal and a DLC deal. Then you've got the best of both worlds. Microsoft's probably too greedy for that, though.