The last time I had a gun pulled on me, the perp was 10’ away. That doesn’t provide the ability for even Chuck Norris to grab the gun before it fires, nor is there time to rack one in (assuming no jam).
I don’t always carry, but when I do, there’s one in the pipe.
Actually the disarm distance is average 26 feet ... if you are ready and the gun is holstered. Gotta be aware of your surroundings at all times