Comment by tapia

This is really an issue that should not exist. I have also bought textbooks only to be immediately disappointed by the fact that you have to use a specific app (like the adobe DRM thing... or just try to get your money back). Then you have to start figuring out how to remove the DRM and lose time with that. Sometimes the quality of the book is also pretty bad, e.g. they don't even include a digital table of contents, which should be essential in a digital copy of any book (this has happened to me with textbooks from Springer). In my case, this has lead to actually buying less textbooks and just pirate the books instead. I don't have the time to deal with all this customer-unfriendly behavior.