Earlier quoted context omitted.
Golang is the new Java. Google designed it for legions of corporate systems coders. It is ultimately destined to be seen as the enterprise language that it is [twenty years ago all the cool kids loved Java]. Google policy is no map function for you, it's just more palatable to bake it into the language than an HR document...it's still pure policy steeped in pointy haired logic. Don't get me wrong, it's better than it…
Golang is no more a Google language than Unix is an AT&T OS. And why are "corporate languages" necessarily bad?
Incipient potential competitors who adopt Go draw a dependency on Google because for all practical purposes, Google will determine the direction of Go: it's core team works there. And incipient potential competitors have radically different needs.
We can differ in opinion upon whether Unix was seen an ATT operating system. For me the legal and licensing histories suggests that it was in a strong sense and the "Open" and "Free" and "Li___" are the heritage.
YMMV.