The situations aren't comparable.
OpenAI was a non-profit foundation that held a controlling share in a for-profit organisation. It's model is based around controlling access to their data (which was never open), and controlling access to their models (which are also not open).
If Ghostty does sets up a for-profit org with the NFP as the majority holder then we can have the conversation, but even at that fork + move on (like OpenTofu, Valkey, CentOS, MariaDB, Jenkins) is an option.