[thalur]

I can only speak for myself, but the arguments you list aren't things I would really consider at the time of purchase: I've never yet wanted to buy a book anonymously using cash, though I won't rule out wanting to do so in the future; the lack of/limited lending is a concern, but if the cost of the book is low (e.g. ~£1 like a lot of self-pub books are) then I would be happy to buy a copy instead of borrow one, and if I'm buying a book (of any sort) the lending potential of that book doesn't figure into my decision at all anyway.