Still, those reasons apply. If you want such a service, expect to pay way more than usual. I do expect that some companies offer such a service for VIPs and Celebrities who don’t want to pop up in other peoples listings, but they probably pay for it through the nose.

Are you sure you cannot simply opt out while registering the sample? I live in Germany and I can only use these kinds of analyses for ethnicity/heritage analysis since genetic testing of risk factors as therelike are forbidden here. But I remember myheritage (which I used) asked me a lot of questions on how much data I want to share, what I want to share anonymously, what I want to share for research or keep in the database or sample storage for future analyses. I was also able to absolutely delete all data - account, sample destruction, genetic data - from every database. Comes with the obvious caveat that you cannot access any data from your initial analysis anymore but in my situation that was an ok trade off.