Here's why I'm not worried about an Amazon monopoly (I'm open to changing my mind on this).<p>1) It's not really a monopoly as long as the authors/publishers sell through other vendors too.  Will I buy eBooks from Amazon, Apple, Barnes and Noble, Sony, or someone else (Wal-mart has to be at least thinking about it)?  They're not here yet, but I expect to see eBook readers that work with multiple stores.  I'm sure the iPad will through apps like the Kindle app for the iPhone.<p>2) Lock-in through DRM isn't nearly as much of an issue as it is with music because I don't re-read books more often than one book per decade.  I have a handful of books that I re-reference every once in a while, but it's rare.  I can switch my supplier very easily if someone comes out with a better device.<p>I have a lot of freedom to choose both the store and the reader (not complete, but a lot).  As long as the stores don't require exclusive contracts, I think we'll be OK.