It's not the connector, it's the communication protocol.

It's super lame though. It will be great to watch the downfall of HDMI Forum when their artificial dam against DisplayPort in the living room finally breaks.

How else will you charge people from implementing support for it?

Why not? Its not an open standard. This is the rent-seeking behavior you get under for-profit capitalist implementations. This is why we push so hard for open standards.

We also have a secret json schema for Dolby Vision, idk why are you surprised. This talk is about protocol, but the connector.