there are a couple of other threads concerning aspects of this topic
https://www.mobileread.com/forums/sho...d.php?t=111135
https://www.mobileread.com/forums/sho...d.php?t=110908
Many of these local stores just wouldn't or couldn't afford to get ebook content from the likes of Ingram or OverDrive. I know I have been on the waiting list fof both of them so know the up front costs.
Google Books changes that as the set up is much less costly especially for those ABA member stores already using that particular cart system. its just a basic upgrade.
Now , like Steven says, lets see what they do with it.