I work in population genomics (non-human organisms), and myself participated in an early near-whole genome genotyping study back when microarrays were still the predominant technology (academic NOT commercial).

But for nearly 20 years I've been telling my extended family NOT to participate in any large scale genotyping with 23 and Me or similar commercial companies where they retain rights to your data, anticipating that something like the current scenario would likely play out.

Somehow, 23 and Me genotyping became the "gift du jour" for Xmas some years back -- I never personally understood that or why someone would want to turn over so much data to a commercial entity.

This is not to say that large scale sequence information is not appropriate for *some people*. But if that's something you need, make every effort to make sure you own your own data.