Why do publishers insist upon publishing books that I want to read whilst I am in the middle of a NaNoing?

I'm talking to you Little, Brown & Company (Michael Connelly's The Overlook and Tom Doherty Associates (F. Paul Wilson's Bloodline: A Repairman Jack Novel).

Apparently, I shall read and write simultaneously. More or less.

How about y'all? Do you continue reading while you are writing, or do you go cold turkey?