Right, however in public its a bit more challenging to identify a DNA sample with the identity of its owner. One can get this via a targeted attack, yet this seems in the same spirit of going through someone's trash to find their bank statements.
That’s a fair point. Operating a global database that connects someone’s DNA to their identity brings up different issues than just being able to easily sequence someone’s DNA in a “targeted attack”. I think worrying about keeping your DNA private is a fools errand (See oxford nanopore and extrapolate), but discussing what companies can do with these databases is probably a more fruitful effort.