While this may not SEEM applicable to this post, I think that it's a "textbook" example of what might happen if you merely give up and don't try to resist.
Back in the 1960's, two "seasoned" LAPD officers, working a "Felony car" (plainclothes) confronted two "suspicious" males in Hollywood. One of the "suspicious" males drew a handgun and got the drop on both officers, but one of them (Officer Karl Hettinger) drew his service revolver when his partner (Ian Campbell) was being held at gunpoint. One of the suspects (Greg Powell) ordered the officer to give up his weapon, or else his partner would be killed. Officer Hettinger COMPLIED, thinking that if he handed over his revolver, the two suspects would depart and not harm him or his partner.
Instead of leaving, both officers were taken hostage and driven around the Los Angeles area for awhile, before they were taken to the Bakersfield area and an "Onion Field". In that onion field, one of the suspects (Powell) erroneously thought that the "Lindbergh Law", regarding kidnapping, applied to the situation, and would result in the death penalty for both suspects. To "resolve" the situation, Powell wanted to kill both officers, so that there would be no witnesses. Officer Campbell was gunned down, but Officer Hettinger quickly ran away and hid.
If you haven't seen the Joseph Wambaugh movie of "The Onion Field", I can only suggest that you try to find it for viewing.
Shortly after the Campbell/Hettinger incident, the LAPD chose to make a firm ORDER for all officers to adhere to....NEVER surrender your firearm!
I was a "rookie" LAPD officer back in 1971, and had heard about the Campbell/Hettinger incident in the police academy. In late 1971, when I was a "field" officer, former Officer Karl Hettinger attended one of the daily briefings. He "preached" about never surrendering your firearm, no matter what, and his short speech was definitely a gut-wrencher. His life changed drastically after seeing his partner killed, and having to recount his side of the story many times over in court. Eventually, Hettinger became a "basket case", turning to booze to "ease the pain". He had been given a somewhat "posh" position on the LAPD after that incident, but was eventually deemed to be unfit for police work.
If you are ARMED, in my opinion, you DO have a somewhat "reasonable" amount of being able to defend yourself, even if a gun is aimed at your head. If you're NOT armed, you MIGHT be able to survive through other means. It might mean that you need to run, or to cause a distraction of some sort. It might mean that you'll need to use your most valuable "weapon"....your BRAIN....and to utilize some other sort of available "weapon" to survive! The world surrounding you is filled with non-descript "weapons", if you think about it! It could be in the form a sharp pencil, or maybe a heavy object of some sort, to disarm the armed suspect. How about a "ruse"....yelling something like "There's the police!" just might work as a temporary diversion tactic. Maybe dropping to the ground and trying to kick the legs of the armed suspect, so that he loses balance and falls. Inside of a store, you might be able to pull a shelf full of canned goods down, then run like you've never run before. A fraction of a second might mean "survival" to you. Heck, even if you ARE shot, your chances of survival are better than giving up without doing anything!