Looking at tech publisher: Oreilly tried selling drm free books. They gave up, and went subscription only (you can buy drm books of theirs through other servi

Looking at tech publisher: Oreilly tried selling drm free books. They gave up, and went subscription only (you can buy drm books of theirs through other services). Manning still has drm free books (though they insert your name into each page, which is a neat trick)