So what if ALL gaming companies united under a single banner to make the most super epic awesome Skyrim rpg that all of us have been dreaming of?
It would svck. Every great game has it's flaws. I am willing to accept that for different gaming experiences and stories.
To your point of all the companies gathering together, it already happens. Developers move around from company to company all the time. They don't take content, but they take their style and viewpoints and opinions. Then people collaborate by chatting in the hallway or scratching out ideas on a whiteboard. Ideas meld, good points get used, bad points hopefully get tossed. Try to get companies to collaborate? Sure, once the lawyers and accountants and bankers get through with things, they are allowed to create a generic product that appeals to most on some level but not to any on a deep level. Only a focused team can create a game people want to play, want to get emotional about, and want to experience again, warts and all.