They get punished, but live. Maybe one or two of them will see the error of their ways, and turn from committing robbery, and get a real job, instead.
Many years ago, in the very same neighborhood, I held off four would-be muggers, without shooting them. One of them appeared to me as being not so hardened as one or two of the other three (particularly one of them, who looked to be hard-core thug). I really didn't want to shoot the guy who loooked like he might have come "from a good home". That one would have gotten it last, if at all. I don't think he realized what was fixing to go down, what a couple of his aquaintenances had in mind.
Last I heard, they were headed the other way, with hard-core saying "that's a crazy f*%#!*$! white boy" hehheh... He got that part straight.
But I didn't want to shoot any of them. Just didn't want to get mugged. Ya' never know just how far that kind of stuff will go, you know? Will it stop with just the wallet "removed", or will serious injury or death follow?
Just another one of those un (officially) -reported instances where a citizen properly exercised their 2 Amendment rights. How many thousands of times a year does that happen in this country, with nobody getting hurt, and no one in the lamestream media hearing about it (or hear it, but are unwilling to write about it), or if it is written about, how many folks just "write it off" as an isolated incident?
Everytime I have a bowel movement, that's an isolated incident. Small potatoes, as it were (as they were?) Do it isolated, but regular enough, multiply by however many thousands or millions of folks live in a given area, and pretty soon, there needs to be a sewage treatment plant, just to deal with all that crap!