That will take a long time, right now analyzing one person's DNA to a point where an insurance company could profit from it costs way more than the extra profits from denying some potentially short-lived clients.
Considering prior authorization is predicated on the fact that if they reject enough requests inevitably some people won't fight them, meaning they don't have to pay out, I wouldn't be surprised if they use a slightly better than chance prediction as justification for denying coverage, if they even need an actual excuse to begin with.
Privacy is dead because of the average person. They were informed several times, but they decided it wasn't important. And they ruined it for everyone else who cared.
Were they of the idea that when you tick the "my data can be used anonymously for research" box it meant that their data WOULDN'T be used anonymously for research?