Why would I install homebrew on a work laptop if I cannot build or run code on my work laptop? Why would I install a dependency management system if company policy is that all third party code is checked into the repo as source and built using blaze?
Because you can also install applications via homebrew. I use it for a few things, including installing bat, delta and other Rust coreutil replacements that I prefer. I absolutely do not use homebrew for project dependencies.
When I worked for google, several of my projects were developed locally on laptops. My intern (who was developing tensorflow robotics computer vision stuff) used homebrew to install tools. Not everybody at Google used blaze.