Similar story for other countries as well, apart from totalitarian regimes that does the same thing openly.
It's only natural that they don't see themselves as the threat. To them the threat is criminals/terrorists, etc. and sacrificing our civil liberties would typically let them catch one or two more of those.
The second point, that they don't see themselves as the threat, assigns them with too much of a lack of self-awareness. I believe many in the current ruling party do see themselves as a threat but they hate the woke/immigrants/workers so they're fine with it.
And most upper management, CEOs and billionaires never wanted power but aquired it by accident?
If your directive is to protect the public, the best way is to know what everyone is doing at anytime. Think of overprotective parents and their kids. A "the road to hell is paved in good intentions" kind of deal.