I like the idea of the eBook, but it seems like the industry is making the same mistakes the music business did - heavily DRM’d, non transferable, single device files. iBooks doesn’t allow you to read a book on your Mac that you bought on your iPhone. Google Books don’t work on Kindles or iBooks. You need to create an ‘Adobe identity' before you can read the book you bought. Etc.
It’s like they want you to keep buying the dead tree option - and maybe they do, for the time being at least.