> They are expected to write go.
Like who? Outside of Go itself, which is really more of a community project — albeit with the chief maintainers still on Google's payroll, almost nothing at Google is written in Go. In fact, Pike once gave a talk reflecting on why it didn't succeed in that space, and noted that it was the "Python and Ruby programmers" who actually ended up adopting it.
Google makes money selling services (i.e. Google Cloud) that run Kubernetes, Docker, etc. If it weren't for that, it is unlikely that Google would even be continuing to maintain it at this point. It was an interesting experiment, perhaps, but ultimately a failure within Google. As before, it was the Python and (probably most especially) Ruby communities that ended up leaning into it.
Which isn't surprising in hindsight. Go offered those who were using Python and Ruby a language that was in the same kind of vein, while solving many of the pain points they were experiencing with Python and Ruby (awful deployment strategies, terrible concurrency stories, trouble with performance, etc.) These developers were never going to use Haskell. They wanted Ruby with less problems.
And that's what Go gave them — at least to the extent of being better than any other attempt to do the same. Since it solved real problems people had, without forcing them into new programming paradigms, it was adopted. Choosing a technology based on starry-eyed fandom and arbitrary feelings might be how you go about navigating this world, but that doesn't extrapolate.
