The problem with hiring a "defensive agency" (also sometimes called mercenaries) is that the people with the weapons tend to write the rules, if not immediately, then eventually. And the fees that are at first offered as wages will soon come to be extracted at sword-point as tribute. History, especially ancient history, shows many examples of this.
The problem with electing a "defensive agency" (also sometimes called the government) is that the people with the weapons tend to write the rules, if not immediately, then eventually. And the fees that are at first offered as payment will soon come to be extracted at sword-point as taxes. History, especially modern history, shows many examples of this.
Hank