One advantage you have: a BAA, required for HIPAA compliance, is only available with a very expensive Enterprise plan. For HIPAA compliant organizations, a self-hosted alternative could be very attractive.
If I'm not mistaken, they want a minimum of 800 seats to sign a BAA. It's absolutely crazy, and forced my company to choose a significantly worse product in its place.
Edit: for Plane, the GPT powered pages are a non-starter for HIPAA unless the feature can be completely disabled.