Wow...I didn't realize that by buying electronic books and music, I was giving up my rights to a perpetual license to that content and handing it over to whomever I bought it from (Amazon, Google, B&N, iTunes). If I had bought the printed copy or that on a disc, I would have a perpetual license to that content as long as I own the media.
Why Amazon is within its rights to remove access to your Kindle books | ZDNet
This, to me, is totally unacceptable.
I'm not going to whine about this, but I'm just going to stop buying (i.e., I meant renting) this kind of license. I'm canceling my order for my Paperwhite, too.