Google is an unethical technological giant based in a major power (read: zero consequences). The data they would receive from this is extremely sensitive, and therefore lucrative. At the very least, their government would be interested in this information and they would be a good target for such interest simply because of their size and severely lacking ethical compass.

All these things taken together means it is not crazy to imagine that this is the case. If it is not the case currently, we have to assume it will be the case soon and that when it does become the case, historic data is still available. They are therefore always a bad choice.