I think the thread title is a little loaded. the goal for ANY game is to make money, yes you hope that the team that makes the game loves the process of game making, but the publisher still wants to get paid.
The reason I am apprehensive about Halo 4(not hate mind you, just apprehensive) is that I think it is the wrong direction for the halo franchise. anyone who has paid moderate attention to the single player campaign of Halo knows that its story is deeply rooted in various mythologies. the ending of Halo 3 is rooted in Arthurian Legend.
King Arthur (the Chief) is presumed dead after preserving his kingdom (Earth/Humanity/Galaxy) in a crusade searching for the holy artifact (the Ark). His body is laid to rest on a raft (Forward Unto Dawn) guided by the Lady of the Lake (Cortana) to Avalon (the so called Legendary Planet) until his people need him again.
Bingo, Story Done, the King can rest. Microsoft rather has chosen top wake Arthur to fight again, and I wonder if it is needed. I want the Halo Franchise to continue, I really do, but I want to play tales of ODSTs and 4th Generation Spartans and Arbiters of past and present. I want expeditions sent to the 5 other Halo Rings. I want the Franchise to explore arcade style flight sims, and third person platforming adventures, and tactical espionage action.
there are so many avenues of exploration for the franchise that I feel it is a cop out to generate a second trilogy about the Chief and Cortana.