Laws are usually written as a reaction to excess. But excess is measured as a distance between two points, and both are able to move: actions can be more extreme, and our judgements can be more or less harsh.

I think things could change quite dramatically if there was a moral panic around it. A few more scandals - something personal that the voting public can really relate to, rather than something vague and distant and somewhat comforting to some people, like mass surveillance.