No, acktually is. Games are our literature, for better or for worse, and great lit isn't written by committee. Trying to do so is a guarantee that it will fit together poorly.
Then we need to settle for much smaller games than we have now. There's no way something as big as, say, either of the Pillars games could have been written by a single author.
Also collaborative literature is also literature, and it does
not necessarily mean writing by committee. Nor does it mean the strict vertical command structures Chris so loves. Collaboration really is a thing. Collaborative writing is a little bit like playing a tabletop RPG – sure, there's a DM, but the players riff off him and each other. Imagine something like that, except you're producing a text rather than an experience.