I sense a mix-up between DRM and open/standardization of format. DRM alone doesn't create the kinds of problems outlined in this post. Perhaps we should be more uncomfortable about the lack of inter-operability or portability between purchased eBooks and apps that can display them. I think that DRM would be fine if it was implemented in an open/universal system.

Most everything of importance to me is sitting in one or more of my mail accounts. Does anyone else do this too? Stuff like taxes? I have a hard copy, just in case...