> there is more or less a guarantee that your data won't be sucked up by a corp

Not true. "The HIPAA Privacy Rule establishes the conditions under which protected health information may be used or disclosed by covered entities for research purposes" [1]. Your de-identified data can be sucked up by a corp for research purposes. You are protected because your identity will be removed before data is used for research.

https://www.hhs.gov/hipaa/for-professionals/special-topics/r...