Personally, I have had some terrible experiences with Google. An Ebook was placed on their site, converted by an even worse notorious company First Editions Publishing, which I later had pulled due to concerns about the quality of the Ebook conversion (The paperback still remains I believe great and PLR figures continue to maintain my belief in this) but Google Books, I could not contact them with any issues I had in regard the book.
To the extent, when you would send them an email, it was returned via mailordemon. Worse, when I resorted to placing a complaint on their posts, and enquiry – I never received really a sufficient response from them, and despite not requesting this feature, I received “hundreds” of emails over weeks, notifying me of updates to their posts.

Google, rather than blaming the independent book fraternity for the lack of sales materializing – I think you should look to yourselves, to see where most of the problem genuinely originates!