You said "symbiotic," not me :-) I would describe the relationship as mutualistic: both parties benefit, but not necessarily proportionally. And they don't nee

You said "symbiotic," not me :-) I would describe the relationship as mutualistic: both parties benefit, but not necessarily proportionally. And they don't need to benefit proportionally, but there's also value in highlighting the disproportionality: it behooves the OSS community to remember that extremely valuable ecosystems like GitHub and GitLab derive a significant amount of their value from the continued (and mostly passive) goodwill of the community.