Show me one instance of an OC person having their gun taken as you talk about. Simply. Does. Not. Happen.
Criminals look for easy marks, not for people who show they will defend themselves to the death and are prepared to do so.
FWIW, I OC.
I did it by walking up behind my sister in law, I grabbed her pistol (she uses a low slung cheap swat style holster) and I yanked it out of the holster and had possession of it.
If you’ve ever taken a weapons retention class they show you that this can happen and does. There are numerous times when cops are killed with their own weapons due to this, and they have better holsters than my SIL or Step Brother do.
If you don’t think that criminals will go after armed people then you’re not reading the news. They go after armed police all the time. My 3 nephews are police and they have dealt with this more than once. It’s not as rare as you make it sound.