The group of individuals handling this data are more than likely to be bureaucratically appointed rather than democratically elected.
>It doesn't help anyone cling to power.
On the contrary, it is human nature to do so.
Exactly what I was going to reply. There is no need for any conspiracy theories to acknowledge that in almost any democratic states of these days "states within a state" exist when it comes to surveilance and intelligence services. While political function owners come and go with each election, those organisations seem to be more structural conservative following agendas which reach beyond any legislative period.
You also see the same nonsensical policies on other topics like global warming, gun control (in the US), the war on drugs, and weird alternative treatments available on the NHS.
In a totalitarian regime it makes sense because you can use it to prevent political opposition. But in this case, it's a democratic government that can easily be voted out. It doesn't help anyone cling to power.
Maybe I'm over-thinking, but I can't work out the point.