Oh it's great for them, but not so good for me and you as gamers.
Imagine how many great features are being left out of games just so that they can be released as DLC later. An example is the upcoming DLC for skyrim which features crossbows as a new weapon. you'd think they'd have thought of the idea way before skyrim itself was released as it seems such an obvious choice of weapon to include in the game. fact is the idea of crossbows probably did come up during the design process but they decided to hold on to it for DLC. the result? we missed out on a cool weapon in our game (unless we purchase the add on pack)
This whole culture of selling customers half a game and making them pay to unlock the rest of the features (SF vs TEKKEN), is fuelled and encouraged by platforms which are willing to shell out millions of $ to developers just so they can have the DLC exclusive to their console first. In turn, the hype surrounding the DLC drives many gamers to purchase and we see ourselves falling into a downward spiral of diminishing quality and extortionate practices regarding products we have already paid for and own.