Why else would Google have bought them if not for defensive reasons in patent spats? That part of the purchase has been a failure. The patents have some value within Motorola, but Samsung isn't going to give Motorola any space to survive, with or without Nexus branding. For that matter, none of the Android OEM's are going to be allowed room in the market without bloodshed.
Samsung's margins are getting hammered by overproduction at this point in time, and still marketshare is all that matters.
There is quite a bit of analysis on the web that is negative on the benefit to Google of the Motorola buy, and little positive.
I welcome any of that which you provide which supports Motorola a as good "buy", but I expect you will find plenty that refutes that.
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The iBook Author platform is similar. The Agency Model, even the 70-30 split is ideal for self published Authors, on any platform.