Google is "giving away" Go in order to get en ecosystem, which means they can offload training to a community and maybe even get code from external. They give

Google is "giving away" Go in order to get en ecosystem, which means they can offload training to a community and maybe even get code from external. They give away Chrome for spreading it and giving them control over web standards. AT&T gives UNIX away as they have no revenue stream on top of it and it being research. Google isn't giving out their research work.