People might elect a genocidal government that decides to send all people with Trait X to the gulag, and Google or Facebook have data identifying you as having

People might elect a genocidal government that decides to send all people with Trait X to the gulag, and Google or Facebook have data identifying you as having Trait X. Clearly the solution is to give the government even more power so it can stop these companies collecting the data, because without them there's no way the government could conduct mass data colllection on its citizens.