Gilozard: Most ebook sellers - Baen's one of the few exceptions - use DRM to prevent you from reading their ebooks on another company's ereader. So in order to read books from B&N you have to buy a B&N reader, to read books from Amazon you have to buy an Amazon reader. If your account gets blocked you may or may not lose access to your ebooks. If you want to get a better reader from another company touch luck.
It seriously limits competition in the ebook market. That's been mitigated somewhat by Android phones having multiple store apps, but it's still hugely irritating not to have your library all in one place.
Companies can remove purchased books remotely or change book content as they please. They typically don't because why would they? But when they do have a good reason they do it.
omega64: At least now I have a clear reason never to get into ebooks.
Ebooks are great.
DRM-removal software is free, easy and effective. Look up Calibre (library management software, like a virtual bookshelf) and Apprentice Alf's plugins (DRM-removal). I buy all kinds of ebooks and read them wherever using that software.
There's a lot of ebooks available DRM-free, especially public domain ones. Unless you really want a physical copy there's no reason to pay for a classic book anymore, just check out Project Gutenberg.
omega64: At least now I have a clear reason never to get into ebooks.
gooberking: When I was looking at it there was stuff that would get locked to a store (say B&N) but there were stores that let you buy books at a more generic level and load them onto generic devices. To do that you HAD to create an account with Adobe and their software would be required to monitor and authorize each install. There were limits to the number of devices you could have. It was a PITA if there ever was one.
That was a few years ago so stuff might have gotten vendor locked a lot more since then. E-books have a lot of the same issues music does with how much DRM gets in the way of expected usability. It's interesting that music DRM buckled under the problems it was creating where as books seem to be getting away with it a lot more successfully.
Fewer people have to interact with ebook DRM. DRM and internet technology is better now, we can have stable online accounts, internet access most places we go, and basically every ebook seller is vertically integrated enough to offer most books plus a decent reader. It's not the fragmented market that music was. Most people just buy a reader from one store and then buy their books there.
Plus, there are fewer people who read a lot than who listen to music a lot. Niche market = less sway.