>>102471356Because if they did, we couldn't blame the heroes for the wrongs that their villians do. Seriously, everyone is going to blame Batman and Spider-man for the lives that the Joker and Carnage take when they aren't even legally obligated to protect the city in the first place?
Arkham security is a joke if some no power criminal can escape on such a regular basis. Put some funding into increasing security.
If the city has the threat of an alien entity that can slaughter for almost a week before capture, you go to Reed Richards, Tony Stark, or one of the other billions of super scientists in the city and ask them to develop tech to arm your men to handle such a threat.
But don't cry "help me! help me!" when you need their help then immediately treat them like the villian because they won't take a life, because you sure as fuck know that if Batman or Spiderman ever killed a villian as a solution to the problem everyone would just question the danger of having a vigilante running around as judge, jury, and executioner.