If I recall correctly, there was something about one of the main motivations in creating Go was to simplify build systems (partly reduce file reads of duplicate

If I recall correctly, there was something about one of the main motivations in creating Go was to simplify build systems (partly reduce file reads of duplicate header files), so I imagine "go build" was designed to work at Google's scale. Also, apparently Bazel only contains like 10% of the build rules that Blaze has. Blaze being the internal version of Bazel. Some of those rules are Google specific, but I believe I read that some of them they would like to port (untangle from proprietary stuff) to Bazel, just haven't had the time to do so yet.