Fascinating to see how heavily Ruby and Python feature. The things that surprised me by their absence and near absence were languages I love: JS and C# That said, this is taking now well established startups that will have begun their lives 5+ years ago in general. If I was picking a back end stack then I'd probably hesitate before picking the .NET Framework. But these days I'd easily pick .NET Core. Likewise, I'd wa…
But since then, that space has gotten a lot more crowded from all sides. There is now a pretty big selection of mature technology to pick from depending on your needs.
In the case of Python, it got also a massive boost from its popularity in datascience. Couple of years ago I thought Python web development is dying out slowly, but seems to have swung back quite a bit.