So, when the police chase some teenage speeder down the highway, causing him to smash into your car, you won't sue the police, right?
1) A speeder is not the same as an attempted murderer. 2) Criminals are now using the police non-pursuit regulations to commit more crimes and drive away faster and eventually kill more people. 3) Beck had already been shot. 4) There is no evidence to prove that the perp attempted the carjacking solely because of Beck. 5) some situations just plain suck, you will be victimized, and you can't cash in on them.
Maybe Beck should have just died like he was supposed to and this woman wouldn't have suffered like she did.
There is a big difference in a man defending his family from a violent felon; and a meter maid with a gun.
BTW, if Beck was a cop, they'd have already given him some kind of "cop-hero" award.