Speaking of John Grisham-- Everyone does understand, right? When you're a NYT bestseller, you can expect, uh, more deference from the publisher/editor/world than lesser-known authors? I just want to make sure everyone understands-- with NYT rank comes privileges. (Deservedly so.)
There are plenty of newer writers who misunderstood that fact of publishing lives and never got very far. I remember, when I was just starting out, a writer who sold 5 books in a single year, and refused to allow any editing at all. The publisher (as the contracts allowed) cancelled all the contracts, and the author was never heard from again, except as a lesson to us all.
What John Grisham can get away with now, he couldn't have gotten away with 20 years ago. And that makes sense-- he's made a lot of money for his publishers since, and they owe him. And he has proved that he knows his audience best, and can reach them and get them to buy. No new writer, however talented, has proved that. The new writer might be exactly right, but the publisher is being pretty sensible too. Some writers really just are more talented and/or more successful and should get a bit more allowance than most. But publishers can't necessarily know that early on.