Every single patent infringement case involving Moto's patents were lost, and Google looked stupid as a result, it was damaging their brand.
I don't know what this does to the existing Moto phones, but I think Lenovo will do a damn good job making phones.
I think Samsung and Google have agreed to conquer the smartphone world, and this is part of the Faustian deal.
Patent sharing between Google and Samsung, the pending death of nexus devices, an agreement over the interface Samsung will utilize, putting Tizen on a back burner, and the sale of Motorola. (Plus other agreements we don't and may never hear about)
The nexus line never generated much $, and it confused the manufacturers, as well as the purchase of Motorola by Google.
We're witnessing the birth of this generation's version of MS/Intel dominance of the PC market, Google & Samsung will essentially be the mobile market.