This is something that comes up a lot with OSS founders. Something along the lines of "I have this thriving open-source product but those using it don't even know my commercial offering exists."

There's a lot of things that can be done to address - actively engage with those users for one - invest in building a community around the open-source product (e.g., Discord server or meetups for contributors and so on) - producing content around problem solving, i.e., "basically blog posts"

At the risk of this comment being flagged as promotional, this is a problem we're trying to solve with Common Room. That is, ingest data from your GitHub repo, use it to triage issues, use it to detect (and reward) top contributors, use it to find opportunities where a commercial offer would add value.