Economists who have written on punishment find Rothbard's “double restitution” idea puzzling, because they think about it only in terms of economic efficiency. But Rothbard's theory is based on a moral principle.
Although governments continue to insist "it's for the children," we should never go back to the dark ages of privacy before easy-to-use encryption. Nor should we allow a "back door" for governments to access our data.
The Left believes that we need the state to force people to act in line with "social justice." This means that somebody must force compliance with state edicts, even if those people aren't called "police."