How is Google making money off of golang? Are they selling tools for it? Not that I see. Are they selling the compiler? Nope (they don't even 'own' it, it's

How is Google making money off of golang? Are they selling tools for it? Not that I see. Are they selling the compiler? Nope (they don't even 'own' it, it's open source) You really need to explain your thought process here because it doesn't sound based in reality.