I put that badly. Ignore the auteur bit.
My point is that individual authors tend to have very defined views of what games should be. That's fine for an individual, but the medium needs diversity, overall.
Ah, but here's the thing. I guess I fall into the bracket of being an auter, and I guess I have very defined views of what games should be (although I like to think I'm always learning), but that doesn't mean I want to impose my view on What Games Should Be(tm) on everyone else. I'll debate it, express opinions, whatever, but ultimately an auter's job (I know you said to forget about auters but then you immediately starting talking about "individual authors", which is exactly the same thign) is to put out games that reflect their worldview and hoping that they find an audience of like-minded people who enjoy their work.
All of which is a long way of saying that so long as auters don't do anything to stifle the creativity of other auters (and as far as I can tell, they don't), then their collective and wildly-differing output becomes the exact magic spring which spews forth all of the diversity which the medium thrives on.
I'm not sure I follow your logic. Are you saying that individual authors are bad for diversity, or that there's some kind of politicking going on which somehow stifles individual authors and the diversity they bring?