By “based on” I don’t mean a shared codebase or features but rather Parker and I exchanged emails a decade ago to discuss business models and open source funding. He initially copied my Sidekiq OSS + Sidekiq Pro business model, with my blessing.

This is absolutely true (except we went OSS + Web initially, Pro came later). You were an inspiration, always helpful in discussion, and definitely paved the way for this business model.

Thank you for the clarification!

You got the beer. We got the pen. ;)