It's seems both fascinating and terrifying. Future authors will be treated differently. Early drafts will be subject to Kindle focus groups. The readership of the first week's sales will be scrutinised, not by number, not by 5 star reviews, but by page references:
"27% of readers are giving up on chapter 3, 18% skipping chapter 4 entirely, and only 2% reading in one sitting. On the plus side, the sex scene in chapter 14 is getting plenty of re-reads."