DRM exists because the costs of the ebooks are outrageous and people know this.
I dont buy Hardbacks because I can wait a half year or more for the paperbacks. They have moved to 10.99 or so now for some large Paperback books and the ISBN number actually had the price in it. So, then I would go to used book stores and buy the books sometimes 3 to a dollar, etc.
But lets talk first purchase here. Cost for ebook delivery? minimal. Someone tell me how its more than .25 cents and explain it. So delivery costs is gone, so its basically labor + editing + idea + profit margin (name recognition). So then lets go with a good 1.99 cost and sell 100,000 copies of a book is 174 gross per book.
There is a reason why books are 24.99 on Apple or Amazon? pure and simple: It forces them to do DRM and whine and bitch and claim author X's book did not sell because of piracy instead that it sucked.
I have literally hundreds of paperbacks (more like over a thousand) in ziploc bags in my garage that I was planing on using for retirement. You know, the old Bookstore by the beach. Well thats a shot deal, so... do I trash them, scan them in, re-get the ebook, or just keep them stored until electricity runs out for someone to find and claim they are the Coptic scrolls of our day.