Retail bookshops for the most part have all the protection they need. First they usually 'buy' on Sale or Return - and how the books get returned makes them usually unsaleable elsewhere - you can see it happening in supermarkets - just throw them any old how into a big box. Net loss to the publisher and author. Plus retailers demand and (used to) get 40% markup on little or no risk.
Retailers demanded 'formula' books for higher sales - hence a few writers got in excess of fair space for rewriting their books with ' a twist'.
Authors would net 10% on the RRP, Publishers would take all the risk of publishing and printing new books - big sales covering low sales items, and even no-sale items.
None of it illegal, none of it bad management in reality - but I for one wouldn't go into retail in a fit. But a good way to get books covered and available? No is isn't.
Amazon and others like Barnes & Noble make a vast swag of books of all kinds available, and have also added to the second hand book market by adding offers from such suppliers as alternative buys. Yes they ask there 30% on RRP, but at least ' promote by presence' most books including self-publishing.
We as a Publisher don't even think about approaching bricks n' mortar stores with our products as it simply isn't worth the effort and hassles of dealing with them.
Bookshops and I'm afraid even the old format libraries are doomed. Our local library now has minimal books but lots of computers. It's now called a Mediateque, and that's about right.
Developing technology is now even allowing us to have our large format books in downloadable format, so our printing and stockholding costs are nil. Net result far lower prices for those who want them. Better for the customer and better for us.
I too am of the age of being a bibliophile with more than 3,000 large format hardbacks in my collection, and I still seek and find in Puces, and anywhere I can find them, but I know we are a dying breed. New technology, and new reading habits - and why not?
Cloud sites now provide incredible storage space for nothing (currently) and there's your library folks, no need to even have a bookshelf!
I still love the feel of a book, and still have a problem reading off iPads and Computer scereens, but this is the way of the present, and not even the future.
Even Amazon will be looking to their business model if they aren't already. You heard it here, it won't be long before Amazon has a giant Cloud site just for downloading from and no more physical supply. Rent and read or buy and read onto your own equipment. Fascinating stuff.