Don't want to bet the farm on what, do you mean Dart or Go sticking around? Go is used extensively through Google. It powers a significant DB layer that powers

Don't want to bet the farm on what, do you mean Dart or Go sticking around? Go is used extensively through Google. It powers a significant DB layer that powers YouTube. It serves up all of Google's static downloads and several employees hint at other significant projects they can't speak about. I've only dabbled in Dart, I can't speak to how vital it is, currently it only seems viable when translated to JS or when using in a server-side VM, which is certainly an option if you want. (sorry, I originally had written Google where I meant YouTube, see "Vitess" for more info)