The paranoia fascinates me as well--I feel it, too. I was surprised by my own disappointment in the Nest acquisition. I think there was a time earlier when I would have been tremendously excited.
There seems to be a tipping point for a company when people move slowly from cheering for you to against you. I think it's both a combination of size and behavior. I do fell that Google's push with G+ has harmed their brand in some respects. It was one of the first times personally that I felt that my wants and needs were no longer aligned with theirs. Then the Gmail changes, less room for organic search, etc. I am not saying no one is rooting for Google. I am saying their brand is in a new, unfamiliar area of public opinion and there's something more behind it than their ravenous ambition.