There's some interesting nuggets, but unfortunately for the most part MMO Evolution reads like an extensive blog post instead of a well-researched fact-supported book.
Rice makes numerous assertions and observations, especially regarding the MMO industry, that he never really backs up with tangible figures or evidence. Though most of the observations are fairly accurate from what I could gather, there's just very little weight behind them since he rarely supports them with facts and figures.
At best, he overly generalizes. At worst, he makes blanket opinionated statements sometimes passed off as facts with little to no qualifiers. He states PCs are a superior game platform to consoles, yet that's very subjective and depends entirely on what type of games you play. Other times he comes off as jaded and inconsistent. On one hand he'll complain the industry isn't doing enough to appeal to the mass market and younger players, but then just a couple of pages later he'll complain that "Basically, games are being created for 6th graders" and that many gamers "long for the golden age of games that required a notepad or journal".
There some nuggets particularly in the latter part of the book where he offers a few interesting ideas to designing MMO games. But even then, it's odd how in the early part of the book he's complaining that the MMO industry is too focused on the same tired fantasy setting, yet many of his ideas in the latter part of the book revolve around that same tired fantasy framework he riled against earlier.
I support self-publishing, but this book is really better fit for a blog and just isn't researched or objective enough to justify a +$20 price tag. However if you can find this book used at a cheap price, it may be worth picking up.