I went to Books a Million yesterday, looking for a specific book, The Giant Thief by Tallerman (I find the author's name combined with that title amusing). Even though I hate the city, I drove into Oak Ridge because their BAM has a better selection than the Knoxville store. Also I wanted to visit Big Ed's Pizza but that totally had nothing to do with my decision, I swear.
The Giant Thief was released on January 30. BAM did not have a copy. So when I got home (smelling faintly of green peppers and happiness), I bought the ebook instead and was able to start reading it immediately.
And there in a nutshell is why brick and mortar bookstores aren't doing very well.