Terms and policies are not self-guaranteeing. A company may promise the privacy of your data, but those policies can change at any time. Changes can retroactively affect data you have spent years putting into the tool. Examples: Google , Zoom , Dropbox , Tumblr , Slack , Adobe , Figma .

A self-guaranteeing promise about privacy gives you proof that the tool cannot access your data in the first place.

Encoding values into a governance structure is not self-guaranteeing. Given enough motivation, the corporate structure can be reversed. The structure is not in your hands. Example: OpenAI .