How to Make Money on Read the Docs

Django has support for multi language sites, but the effort to do that is just monumental. We have like literally a whole team of people who, you know, volunteers who do the translation on each language. It's not something that I work with on a daily basis. The biggest one is Go - they're a huge project on read the docs, totally not in the Python community. Until you start looking at how does read the docs make money?