Google pays a small team to maintain the language, but developing the language is very likely not a business objective in remotely the same capacity as .Net is

Google pays a small team to maintain the language, but developing the language is very likely not a business objective in remotely the same capacity as .Net is for Microsoft or even Swift for Apple. It's not even a major headliner for Google's I/O conference. I would like to know where you're getting your information about Google not investing in Dart, because last time I checked, Google appeared to be investing considerably in Dart (this was back before the Dart vs TypeScript battle was settled though, so perhaps Google pulled up its investment). At any rate, Go's tools don't require significant investment because they are designed for simplicity (there is no package repository, no language-agnostic/fully-imperative build scripting language or project metadata files, no bring-your-own-unit-test-framework, no docstring syntax, etc). Go tools err on the side of supporting too few use-cases, where Java, Python, .Net, C++, etc build tooling typically emphasize explicit configuration over sane defaults.